Plastic is a word that originally meant “pliable and easily shaped.” It only recently became a name for a category of materials called polymers. The word polymer means “of many parts,” and polymers are made of long chains of molecules. Polymers abound in nature. Cellulose, the material that makes up the cell walls of plants, is a very common natural polymer.
Over the last century and a half humans have learned how to make synthetic polymers, sometimes using natural substances like cellulose, but more often using the plentiful carbon atoms provided by petroleum and other fossil fuels. Synthetic polymers are made up of long chains of atoms, arranged in repeating units, often much longer than those found in nature. It is the length of these chains, and the patterns in which they are arrayed, that make polymers strong, lightweight, and flexible. In other words, it’s what makes them so plastic.
These properties make synthetic polymers exceptionally useful, and since we learned how to create and manipulate them, polymers have become an essential part of our lives. Especially over the last 50 years plastics have saturated our world and changed the way that we live.
The First Synthetic Plastic
The first synthetic polymer was invented in 1869 by John Wesley Hyatt, who was inspired by a New York firm’s offer of $10,000 for anyone who could provide a substitute for ivory. The growing popularity of billiards had put a strain on the supply of natural ivory, obtained through the slaughter of wild elephants. By treating cellulose, derived from cotton fiber, with camphor, Hyatt discovered a plastic that could be crafted into a variety of shapes and made to imitate natural substances like tortoiseshell, horn, linen, and ivory.
This discovery was revolutionary. For the first time human manufacturing was not constrained by the limits of nature. Nature only supplied so much wood, metal, stone, bone, tusk, and horn. But now humans could create new materials. This development helped not only people but also the environment. Advertisements praised celluloid as the savior of the elephant and the tortoise. Plastics could protect the natural world from the destructive forces of human need.
The creation of new materials also helped free people from the social and economic constraints imposed by the scarcity of natural resources. Inexpensive celluloid made material wealth more widespread and obtainable.
<span>The Emancipation Proclamation was issued on Sept. 22, 1862. It freed slaves in the rebellious states against the union (slave states and southern states). Although it was issued, it didn't immediately free the slaves. They couldn't just leave their slave owner, they may get killed or tortured. SO, When the Civil War started in 1861-1865, Lincoln had prioritized the union over his freeing of the slaves. (He already issued the emancipation in 1861 anyway) So in 1862, thousands of slaves fled the south and rebellious states to join the Northern Army. When slaves joined the northern army in the free northern states, they became a free man and had quarters to live in. Lincoln was then convinced that what he had done in previous years had turned into a military strategy.</span>
Answer: After word war ii
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Not completely, looking into it it says that globalization has not been good for working people. its hasn't really benefited everyone, so it really depends on how you see it.
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I hope this help :)
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September 28, 551 BC – April 11, 479 BC.
Explanation:
This is when he lived.
