This statement is absolutely true
Free trade agreements (FTAs) refer to economic treaties between two or more countries that set an amount of taxes for exporting or importing certain products that benefits both nations. FTAs support cultural diffusion, option c, and a good example is the North American Free Trade Agreement (NAFTA) which has promoted the cultural diffusion between Mexico, the United States and Canada.
Mohawks
The Revolution split the Iroquois Confederacy. Mohawks led by Joseph Brant adhered to their long-standing allegiance to the British, and eventually most Cayugas, Onondagas, and Senecas joined them.