B. helped prevent and cure diseases like tuberculosis and polio.
<span>The Battle of the Marne the Germans and the Allied troops started to build trenches from the North Sea to the Swiss frontier of France. This battle stopped the Germans from going through Belgium to get to France. They started digging the trenches on the Western Front on both sides starting on Sept 15, 1914
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Answer: A
Explanation: I guessed and got it right lol
Answer:
The time of the first contact between native American and Europeans one of the world's largest city was home to the Aztecs
B The largest number of African Americans who settled in the west
