One of the most challenging issues facing the United States under President Washington was the issue of . a
generating revenue.
b
mediating debate between the Democratic-Republicans and Federalists.
c
controlling Alexander Hamilton's deficit spending plans.
d
establishing a military to ward off a British invasion.

It could be B or D because Washington really didn’t want to participate in external affairs (especially England) and also didn’t like the divide the political parties provided.

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.