Answer:
By the end of the 2nd century CE, the Han empire had declined after a period of chaos, from which three centres of political power emerged (Three Kingdoms). In 220 CE Xiandi, the last Han emperor, ceded the throne to Cao Pi, who thereby became the heir of the empire and the first ruler of the Wei dynasty in one region.
Explanation:
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The westward expansion era in the United States was one of great importance, as it helped to create the shape of the United States today. One of the reasons acquiring land was important was because it would help to complete America's manifest destiny. Manifest destiny is a term that states that it was America's god- given right to control all land from the Atlantic to the Pacific Ocean. This belief that it was supposed to be America's land caused them to buy land (like the Louisiana Purchase from the French and Florida from Spain) and even fight for it (Mexican-American War- results in US getting Arizona, California, Utah, etc.).
Besides completing America's manifest destiny, acquiring this land allowed the US to gain significant natural resources. A perfect example would be in California. After gaining California from Mexico, gold was found. This lead to the California Gold Rush of 1849. Finding this valuable commodity lead to a huge increase in the population of California and it gave the American economy a boost.
Answer:
It led to the collapse of the military power that had held the Soviet Union together, causing the union to dissolve.
Explanation:
Mikhail Gorbachev reforms in the Soviet Union and Eastern Europe lead to the collapse of communism. Gorbachev promoted a new policy called glasnost. He promoted the democratization of society hoping for the participation of ordinary citizens. Gorbachev withdrew the Soviet army from Afghanistan. He released Eastern Europe from Soviet domination, permitting the dismissal of the Warsaw Pact, the Soviet military alliance in the area and stopped nuclear testing.
Answer:
1776, and ended in 1865 because the passage of the thirteenth amendment.