The Stamp Act of 1765 was the first internal tax levied directly on American colonists by the British government. The act, which imposed a tax on all paper documents in the colonies, came at a time when the British Empire was deep in debt from the Seven Years’ War (1756-63) and looking to its North American colonies as a revenue source.
"The following month, Germany sunk four more U.S. merchant ships. ... On April 6, 1917, the United States entered World War I. Get a firsthand look at how a new breed of weapons like WMDs, submarines, armored tanks and air attacks changed modern warfare forever in WWI: The First Modern War"
The answer is : B :))))))))
Slaves and peasants were dying quickly and vastly caused a high loss of work for the upperclass civilians... the peasants could go on "stike". They were able to demand more turning the system on its head.