The German Use of submarine warfare caused tension to increase between the United States and Germany. Their submarines were called U-Boats.
Answer:
He denounced the presence of communists in the administration Explanation:
McCarthy was famous for accusing people of being communists in the army or the administration without any reliable evidence. His witch hunt started in 1950 in Wheeling(West Virginia) when he made a speeh called "enemies from within"
He lost his credibility in 1954 and died three years laters due to his alcoholic.
Answer:
The Yellow River Valley also known as the Huang He
