Answer:Sinking of American merchant ships
Explanation:In early 1917 Berlin forced the issue. Its declared decision on 31 January 1917 to target neutral shipping in a designated war-zone became the immediate cause of the entry of the United States into the war.
Answer:
(i used both noun and verb for silt)
polytheistic - They needed to become polytheistic in order for the Egyptians to except them into their religion.
(1 noun) <em>silt</em> - There was a lot of silt in the river and it got clogged by the end of the month.
(2 verb) <em>silt</em> - The river had to get silted in order to carry the correct amount of water.
Smoking actually increases certain infections.
