A. A military alliance between the Soviet Union and Eastern European countries
The Warsaw Pact dates back to 1955, mainly a military alliance led by the USSR in reaction to the NATO (military alliance led by US) counterpart. This coalition also discouraged the possibility of Western Germany to rearm, especially since the entering of capitalist Germany into the Nato took place the year previous, 1954. Seen from the Soviet perspective, the Warsaw Pact also served for strengthening military presence in the Eastern countries, that were satellite states. The most representative act took by the Warsaw Pact was the invasion of Czechoslovakia in August 1968.
The U.S. Constitution is full of checks and balances of the three branches of government. The best example of checks and balances is that the president can veto any bill passed by Congress, but a two-thirds vote in Congress can override the veto. Congress has the power to set and collect any taxes or duties.
Following 9/11, the United States Government created the new Department of Homeland Security.
The Department of Homeland Security is responsible for just that, Homeland Security, and is responsible for working to stop terrorists attacks on US soil.
The Mongol Empire decided to adopt certain Chinese customs to keep the people happy under their rule. Mongols did trade with the Chinese and used the Silk Route for traiding
