Which action by the United States showed that our policy of isolationism was over?

A. In 1949, the United States joined an alliance of countries (NATO) against the Soviet Union.

B. By joining the Warsaw Pact, it was our major protection against communism.

C. In 1946, we built an Iron Curtain between Eastern and Western Europe.

D. The United States joined the League of Nations to protect ourselves from Communism.

answer: secession

secession, as it applies to the outbreak of the american civil war, comprises the series of events that began on december 20, 1860, and extended through june 8 of the next year when eleven states in the lower and upper south severed their ties with the union. the first seven seceding states of the lower south set up a provisional government at montgomery, alabama. after hostilities began at fort sumter in charleston harbor on april 12, 1861, the border states of virginia, arkansas, tennessee, and north carolina joined the new government, which then moved its capital to richmond, virginia. the union was thus divided approximately on geographic lines. twenty-one northern and border states retained the style and title of the united states, while the eleven slave states adopted the nomenclature of the confederate states of america.

explanation:

they died because of a disease during the first spanish colonies.

true

explanation: