Answer:
I'm assuming you mean the revolutionary war.
The Battle at Lexington and Concord was where the Shot Heard Round the World started the revolution, the first shot in the war.
<span>u.s. entry into WWI caused industrial psychologists to begin working with the military.After entering into world war-I there is a need for U.S to train their military and develop the army's strength and capability.Psychological research and treatment are important to national defense. Research can show how to improve military training, job assignment and equipment design. Treatment can help personnel cope with stress. Psychologists conduct research on human behavior and treat patients with mental problems. so,industrial psychologists to begin working with the military.</span>
In McCulloch v. Maryland (1819) the Supreme Court ruled that Congress had implied powers under the Necessary and Proper Clause of Article I, Section 8 of the Constitution to create the Second Bank of the United States and that the state of Maryland lacked the power to tax the Bank.
thtas what google says
The working middle class of America saw an increased standard of living in the post era of WWII. I believe that is the answer you are looking for.