Federalism is the political principle whereby political entities divide power between a centralized government or the "federal government" and some smaller entities such as "states" in the American system. This system seeks to create a central government capable of ruling a nation, while also allowing for regions to rule their own affairs in areas not designated to the central government.
Under the reign of President Thomas Jefferson, the exploration generally had negative slavery effects on the Americans.
<h3><u>Explanation:</u></h3>
Westward expansion of the US was taken as the key to nation's health by Jefferson. It began early in 1803. He signed a treaty with France in which the US paid a lumpsum amount of money to buy the land near Mississippi river, which infact doubled the size of the country.
Believing that the US needed to expand west to help ensure its survival and prosperity he took this chance to buy the land from Napoleon Bonaparte of France. Though this resulted not in the expansion of the empire rather it became the reason for the destruction of the republic.
The opportunity cost of producing each additional truck remains constant. The third option is your answer. I hope that this is the answer that you were looking for and it has helped you.