Please help! What elements of continuity and change appear during the time period of 1803-1848 in terms of westward expansion? (this question isn't multiple choice it is just like a 3-5 sentence q/a.)

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.