Final answer:
George Washington wanted to join the British Army to secure a higher rank, aiming to advance his career and social status. Nathanael Greene was instrumental in improving American military position in the South. The First Continental Congress focused on compiling grievances against Britain, not directly raising an army or declaring rights.
Step-by-step explanation:
The selfish reason that George Washington wanted to join the British Army during the French and Indian War was C) To secure a higher rank. Washington's ambition was to enhance his own social status and career prospects within the military establishment. This pursuit of personal advancement is not uncommon in military contexts, as higher ranks usually accompany greater prestige and authority.
During the French and Indian War, the British employed a strategy that initially included securing alliances with Native American tribes and capturing French forts. However, they struggled in the early stages of the conflict. On the other hand, George Washington's military tactics, such as his use of fortifications at Great Meadows and his leadership in the field, were beneficial for his reputation, even though he also faced defeats.
Later, in the American Revolution, it was General Nathanael Greene who substantially improved the American military position in the South. The First Continental Congress's main purpose was to compile a list of grievances against the British government. It's important to note that the Continental Congress also made critical decisions such as creating an army amid rising tensions, even before receiving a response to the Olive Branch Petition from King George III.