I believe the answer is c ^^
Answer:
After the signing of the Treaty of Paris, the balance of power in North America changed a lot. Before the treaty, there was only one hegemonic power in North America: Britain, with only a few remaining areas dominated by Spain and France.
After the Treaty was signed, Britain lost its most populated and developed colonies, and a new political actor, the United States, emerged.
A - The Articles of Confederation
Large numbers of skilled workers left Iran in the early 21st century, primarily because "<span>c. they sought more skilled opportunities in countries like the United States," since there were far fewer restrictions in the US. </span>