American colonists, frustrated and angry at Britain for imposing “taxation without representation,” dumped 342 chests of tea, imported by the British East India Company into the harbor. The event was the first major act of defiance to British rule over the colonists.
Another possible source could be from the Plains Indians who gave them that name because of the bison coats they wore in winter. The term Buffalo Soldiers became a generic term for all black soldiers.
2 Chronicles 29:1 says that he ruled 29 years. Scholars disagree on how long he ruled,
Ur answer is in fact E, The North was running out of ways to finance the war.