The answer would be sound waves.
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The purpose of the Selective Service Act (1917) was to make sure that when the country goes to war, it has enough troops to win. The first Selective Service Act was enacted during the first world war. Its main purpose was to get men registered for the draft, which in turn forced men to go to war to meet troop demands.
C - peasants
Lots of lords and bigger lands had poor people which those being peasants
Answer:
DDT, a type of harmful pesticide
Explanation:
The Greek democracy lets the people rule while the Roman republic was more controlled by the government.