Answer:
William Magear Tweed (April 3, 1823 – April 12, 1878), often erroneously referred to as "William Marcy Tweed" (see below),[1] and widely known as "Boss" Tweed, was an American politician most notable for being the "boss" of Tammany Hall, the Democratic Party political machine that played a major role in the politics of 19th-century New York City and State
Because of imperialism, countries now had access to colonies. When the war started, they were able to equip their colonies to fight for their side. This led to higher tensions and increased involvement in the war.
The reason that led to the rise of the domestic slave trade was the regional specialization in labor production. The South had a much higher demand of slaves for the labor-intensive cotton plantations. This demand for labor pushed up the prices of the slaves, intensifying the trade.
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C. Boughr the land from Russia
Expansion of the USSR--Truman believed in a policy of containment in regards to the USSR and communist expansion.
This speech indicates the desire by Truman to create a free world where elections could occur. The USSR and the leadership of Stalin was seen as dangerous by the United States and in particular how communism was spreading through Europe. Truman made it clear that the US was willing to support countries in keeping or creating a free state.