The correct answer is that what led the Soviet Union to establish the Warsaw Pact was that West Germany joined NATO in 1955.
The Treaty of Friendship, Cooperation and Mutual Assistance, better known as the Warsaw Pact, was a military cooperation agreement signed on May 14, 1955 by the countries of the Eastern Bloc. Designed under the leadership of the Union of Soviet Socialist Republics (USSR), its express purpose was to counteract the threat of the North Atlantic Treaty Organization (NATO), and in particular the rearmament of the German Federal Republic, to which the Paris Agreements allowed to reorganize their armed forces and join the NATO. The Pact was dissolved on July 1, 1991.
It helped the Bolshevik government survive the problems of 1921 – there were no new revolts, and the government was able to establish itself securely in power.
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The Mississippi river and other western tributaries most notably the Missouri river formed pathways for western expansion.
<span>The Indian Removal Act had many long lasting effects. First, to enforce the Indian Removal Act, Andrew Jackson would have to diobey a direct order from the Supreme Court. Andrew Jackson went through with it anyway and forced the Native Americans to leave their home. I think that had a long lasting effect on the Supreme Court. When people saw that Jackson, the president, didn't care about what the Supreme Court issued then they wouldn't either. The Supreme Court must have been powerless for a long time because of Jackson. Also it was very unfair to the Native Americans. People forget that the land belonged to the natives long before the settlers showed up. To make the many native people move from their homeland isn't right. Still, they had to walk the trail of tears where thousands of natives died from starvation, diesease, and other factors. When people saw how the Native Americans were being forced away the might have decided that the Native Americans were savage. They became afraid of the Native Americans and pressured the federal government to bother the natives more. </span>