Answer:
Louisiana Purchase: The Land Deal of the Millennium. For a mere $15 million, Thomas Jefferson doubled the size of the United States, buying 800,000 square miles from the French that stretched from the Mississippi River to the Rocky Mountains.
The role of The Protestant Reformation in the history of the United States of America. Over the centuries there had been many reform efforts within the Catholic Church, The term Protestant was not initially applied to the reformers, but later was used to describe all groups protesting Roman Catholic orthodoxy.
It's A) the US must be a leader in innovation in order to help steer its course.