In the Treaty of Paris, the British Crown formally recognized American independence and ceded most of its territory east of the Mississippi River to the United States, doubling the size of the new nation and paving the way for westward expansion.
Answer: the people; monarch
Explanation:
If a a nation is a republic, political power rests within the hands of the people and not the monarch.
A republic is a country whereby the people in the country has the ultimate power and can elect whoever they want as their president.