Final answer:
George Washington was chosen to lead the Continental Army. The Continental Congress created an army and began preparing for war before George III responded to the Olive Branch Petition. The Continental Army faced challenges but eventually became a professional force under Washington's leadership.
Step-by-step explanation:
George Washington was chosen to lead the Continental Army. He was recommended by John Adams and nominated on June 15, 1775. Washington accepted the position, becoming the commander-in-chief.
The Continental Congress created an army and began preparing for war before George III had given a response to the Olive Branch Petition because they believed that peaceful resolution was unlikely. They wanted to protect their rights and liberties, and saw the need for a unified military force to defend against British aggression.
The Continental Army faced challenges such as lack of manpower, organizational difficulties, discipline problems, and equipment shortages. It took several years for the army to become a professional force, but Washington utilized his leadership to achieve key victories and ultimately force the British out of Boston.