What effect did Alfred Thayer Mahan's beliefs have on American foreign
policy?

Mahan was one of the foremost proponents of the “vigorous foreign policy” referred to by Turner. Mahan believed that the U.S. economy would soon be unable to absorb the massive amounts of industrial and commercial goods being produced domestically, and he argued that the United States should seek new markets abroad.

Explanation:

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

impeachment is when a president is committing treason or doing shading acts while in presidendcy therfor he can be impeached   by congress