Which event occurred on April 19, 1775?
A. First Continental Congress was formed.
B. The Declaration of Independence was signed.
C. The British attacked the town of Concord.
D. Colonists were killed in the Boston Massacre.

Which statement about submarine use in world war i is true? the allies never found a way to counter german submarine warfare. germany’s use of submarines affected the united states’ decision to enter the war. only the germans used submarines in world war i.