William M. Tweed was the boss of a political machine..
Answer:
The US government's decision to develop a hydrogen bomb, first tested in 1952, committed the United States to an ever-escalating arms race with the Soviet Union. The arms race led many Americans to fear that nuclear war could happen at any time, and the US government urged citizens to prepare to survive an atomic bomb. Their reason for this panicked prognosis was the United States' decision to develop and test a hydrogen bomb, or H-bomb, a nuclear weapon one thousand times more powerful than the atomic bomb that had leveled Hiroshima at the end of World War II.
Explanation:
The correct answers are:
E. Massive flooding disrupted farming
C. A series of wars forced people to leave the area
The Indus River Valley Civilization, also known as the Harappan Civilization, extended from Afghanistan, Pakistan and northwest India.
