Is anyone really good at math that can help me on my last 3 questions

As a result of the germanic tribes sacking rome

In presidential elections if no candidate receives a majority of the election votes, a. the winner is decided by the house of representative’s. b. the current president remains in office for four more years. c. the winner is decided by the senate. d. a runoff election is held in december between the two candidates who received the most votes in the general election.

How has the united states been influenced by other countries ?