It is false that primary sources are the only sources that historians use, since it is important to consult the works of other writers and historians to get an idea of how events in history have played out. Historians usually use a combination of secondary and primary sources.
B) save the Union
He wanted to preserve the Union at any/all costs
Answer:
World War I Germany's unfettered submarine warfare against American ships during World War I provoked the U.S. into abandoning the neutrality it had upheld for so many years. The country's resultant participation in World War I against the Central Powers marked its first major departure from isolationist policy.
Answer: A) the Chief Justice of the Supreme Court appointed by John Adams, who began a process called judicial review
