Answer:
The casualty rate rose during the 20th century because new technology made war far deadlier.
Explanation:
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The Vietnam War severely damaged the U.S. economy. Unwilling to raise taxes to pay for the war, President Johnson unleashed a cycle of inflation. The war also weakened U.S. military morale and undermined, for a time, the U.S. commitment to internationalism.
Answer: the answer is the fourth option
People were able to do more than hunt for each day's food—they could travel, trade, and communicate. The world's first villages and cities were built near the fields of domesticated plants. Plant domestication also led to advances in tool production. The earliest farming tools were hand tools made from stone.
Random thing, be the creators of fire
This was the first battle of the Civil War.