U-boats were military submarines used by the Germans. While they were useful against warships, U-boats were the most effective in economic warfare by blockading coasts so resources could not be shipped to Germany's allies. WWI was the first major war that employed submarines in warfare.
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Answer:
e. Only in river valleys .
Explanation:
Why? Agriculture needs the proximity of water and the development of methods of irrigation in order to prosper. Agricultural societies were the basis of the first civilizations. In the Middle East, in China, in Egypt, all the first great civilizations rose and flowered in valleys with rivers: the Eufrates and the Tigris, the Yellow River and the Yangtze, and the Nile.
Answer:
Spoils System
Explanation:
The spoils system is when the US president hires his "yes-men" into office with him to work. They do what he wants and things get done quicker. This is still done and impacts how the US does things by what the president wants
