Answer:
B. The Seven Years' War had left Britain with a large debt.
Explanation:
"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 in apex is "the battle of San Juan Hill"
Answer: A shorter work week
Explanation:
The main purpose of labor unions is to give workers the power to negotiate for more favorable working conditions and other benefits through collective bargaining
