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Jan Matzeliger and the History of Shoe Production
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Jan Matzeliger and the History of Shoe Production

Jan Matzeliger was an immigrant cobbler working in a shoe factory in New England when he invented a new process that changed shoe-making forever. Early Life Jan Matzeliger was born in in 1852 in Paramaribo, Dutch Guiana (known today as Suriname). He was a shoemaker by trade, the son of a Surinamese homemaker and a Dutch engineer.

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Astronomy in our Early History

Astronomy and humanity's interest in the sky are almost as old as the history of intelligent life on our planet. As civilizations formed and spread across the continents, their interest in the sky (and what its objects and motions meant) grew as observers kept records of what they saw. Not every "record" was in writing; some monuments and buildings were created with an eye toward a link with the sky.
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Tap Water in 42 States Contaminated by Chemicals

Public water supplies in 42 U.S. states are contaminated with 141 unregulated chemicals for which the U.S. Environmental Protection Agency has never established safety standards, according to an investigation by the Environmental Working Group (EWG). Tainted Tap Water Used by Millions of Americans Another 119 regulated chemicals-a total of 260 contaminants altogether-were found by the environmental group in a two-and-a-half-year analysis of more than 22 million tap water quality tests.
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The Path to Legalization for Illegal Immigrants

Should the United States provide a path to legalization for illegal immigrants? The issue has been at the forefront of American politics for years, and the debate shows no signs of abating. What does a nation do with the millions of people residing in its country illegally? History of Immigrating to the US Illegal immigrants, often referred to as illegal aliens, are defined by the Immigration and Nationality Act of 1952 as people who are not citizens or nationals of the United States.
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Sociological Explanations of Deviant Behavior

Deviant behavior is any behavior that is contrary to the dominant norms of society. There are many different theories that explain how behavior comes to be classified as deviant and why people engage in it, including biological explanations, psychological explanations, and sociological explanations. Here, we review four of the major sociological explanations for deviant behavior.
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Understanding the Big Five Personality Traits

Today's psychologists agree that personality can be described by five broad traits: openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism. Together, these traits make up the five-factor model of personality known as the Big Five. Key Takeaways: Big Five Personality Traits The Big Five personality traits are openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism.
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Sociologists Take Historic Stand on Racism and Police Brutality

The 2014 annual meeting of the American Sociological Association (ASA) took place in San Francisco on the heels of the killing of unarmed black teen, Michael Brown, at the hands of a white police officer in Ferguson, Missouri. It also happened during a community uprising shrouded in police brutality, so many sociologists in attendance had the national crises of police brutality and racism on their minds.
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Humorous Love Quotes

Poking fun at love or marriage can be a dangerous proposition when you're making a joke in the presence of your loved one. Humor is like spice: the right amount can make a delicacy out of a bland meal. The key is "the right amount." Use a humorous quote to season your words with the right amount of humor.
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Introduction to the Doric Column

The Doric column is an architectural element from ancient Greece and represents one of the five orders of classical architecture. Today this simple column can be found supporting many front porches across America. In public and commercial architecture, notably the public architecture in Washington, DC, the Doric column is a defining feature of Neoclassical style buildings.
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Kente Cloth

Kente is a brightly colored, banded material and is the most widely known cloth produced in Africa. Although kente cloth is now identified with the Akan people in West Africa, and particularly the Asante Kingdom, the term originates from the neighboring Fante. Kente cloth is closely related to Adinkra cloth, which has symbols stenciled into cloth and is associated with mourning.
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False Analogy (Fallacy)

The fallacy, or false analogy, is an argument based on misleading, superficial, or implausible comparisons. It is also known as a faulty analogy , weak analogy , wrongful comparison , metaphor as argument , and analogical fallacy . The term comes from the Latin word fallacia , meaning "deception, deceit, trick, or artifice" "The analogical fallacy consists of supposing that things which are similar in one respect must be similar in others.
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Field Trips: Pros and Cons

Are field trips worth all the time and effort required to make them successful? Most teachers have asked themselves this question at one time or another, typically when feeling overwhelmed as they prepare for a field trip. The truth is that field trips at any grade level can cause quite a few headaches for teachers.
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Grant Writing Courses You Can Take Online

Grant writers connect people and groups seeking funding with funding sources. They work in a wide range of settings including nonprofit organizations, educational institutions, local governments, and businesses. If you're interested in a career in grant writing, consider developing your skills through an online program.
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3 Key Differences Between English and Spanish Punctuation

Spanish and English are similar enough in their punctuation that a beginner might look at something in Spanish and not notice anything unusual except for a few upside-down question marks or exclamation points. Look more closely, however, and you'll find other key differences that you should learn as soon as you're ready to start learning how to write Spanish.
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London Dispersion Force Definition

London dispersion force is a weak intermolecular force between two atoms or molecules in close proximity to each other. The force is a quantum force generated by electron repulsion between the electron clouds of two atoms or molecules as they approach each other. The London dispersion force is the weakest of the van der Waals forces and is the force that causes nonpolar atoms or molecules to condense into liquids or solids as the temperature is lowered.
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Sarah Bernhardt: Groundbreaking Actress of the 19th Century

Sarah Bernhardt [born Henriette-Rosine Bernard; October 22, 1844-March 21, 1923] was a French stage and early film actress whose career spanned over 60 years. During the late 19 th and early 20 th centuries, she dominated the world of acting with lead parts in acclaimed plays and motion pictures. She is widely regarded as one of the greatest actresses of all time and one of the first actresses to garner worldwide fame.
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Symmetry and Proportion in Design

Architecture depends on symmetry, what Vitruvius calls the "proper agreement between the members of the work itself." Symmetry is from the Greek word symmetros meaning "measured together." Proportion is from the Latin word proportio meaning "for the part," or the relationship of the portions. What humans consider "beautiful" has been examined for thousands of years.
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How to Use Pickle to Save Objects in Python

Pickle, which is part of the Python library by default, is an important module whenever you need persistence between user sessions. As a module, pickle provides for the saving of Python objects between processes. Whether you are programming for a database, game, forum, or some other application that must save information between sessions, pickle is useful for saving identifiers and settings.
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Dry Ice Crystal Ball Bubble

All you need to make this giant bubble is dry ice, bubble solution, and either a little water or else tonic water and a black light (glowing liquid). You can make the bubble itself glow if you add a little highlighter ink to the bubble solution. The dry ice sublimates to form carbon dioxide gas, which expands the bubble.
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Who Were the Viet Cong and How Did They Affect the War?

The Viet Cong were South Vietnamese supporters of the communist National Liberation Front in South Vietnam during the Vietnam War (known in Vietnam as the American War). They were allied with North Vietnam and the troops of Ho Chi Minh, who sought to conquer the south and create a unified, communist state of Vietnam.
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The History of British Taxation in the American Colonies

The attempts by Britain to tax its North American colonists in the late 1700s led to arguments, war, the expulsion of British rule and the creation of a new nation. The origins of these attempts lay, however, not in a rapacious government, but in the aftermath of the Seven Years' War. Britain was attempting to both balance its finances and control the newly acquired parts of its empire, through asserting sovereignty.
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