I believe B is the answer..
I believe after the President is removed from office for any reason, The Vice President takes over. I hope this helps.
Answer:
Howe's harvester
Explanation:
Threshing machine (or thresher), a machine that first divides the crest of a stock of seed from the hay, and then moreover separates the grain from the rest of the top.
Howe's thresher formed raw materials inexpensive for textile production.