<span>Ronald Reagan administration
In order to win the Cold war and the rollback of the communism. Ronald Reagan created a policy that known as the Reagan Doctrine, that includes providing financial and logistical support to the anti-communist groups fighting against Soviet governments in central Europe.
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Answer:
Federalism is a mixed system of government whereby a central government and a regional government is functioning together leading to an adequate control of a particular country.
In this system, different tiers of government govern the same citizens. But each tier has its own jurisdiction in specific matters of legislation, taxation and administration with the jurisdictions specified in the constitution. It is innovative for U.S. constitution because it helps to govern a very diverse people in the country effectively without fear of discrimination.
It relates to the motto of US <em>“E Pluribus Unum.” (meaning </em><u><em>out of many one</em></u><em>) </em>in the sense that, <em>despite the many colonies and tribes found in United States, the country is still one and governed appropriately by the use of system called Federalism.</em>
Explanation:
Navajo code talkers<span>. </span>Philip Johnston<span>, a civil engineer for the city of Los Angeles, proposed the use of Navajo to the United States Marine Corps at the beginning of World War II. </span>Johnston<span>, a World War I veteran, was raised on the Navajo reservation as the son of a missionary to the Navajo.</span>
<span>The arrival of Europeans in Africa led to the dismantling of old cultural patterns and produced the introduction of new cultures and cultural exchange. Africa faces a new position of customs and traditions that enter with the colonizers and is reflected in the new traditions. However, after the process of decolonization of Africa, it is possible to recover old and own cultures.</span>
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.
