I believe it is A, because of the education that could now be explored at universities.
The Tibetan plateau covers most of asia
A. The US made the Gadsden Purchase.
The US never sold Texas. US won the war. Mexican cession was the US taking land.
Answer:
opposed left-leaning & socialist governments
To my mind the correct option is C. European, Asian, and African plants became a part of the American environment.
The Columbian exchange, also called the Columbian interchange, a name tha received for Christopher Columbus, was the widespread transfer of plants, animals, culture, human populations, technology, and ideas between the Americas, West Africa, and the Old World in the 15th and 16th centuries.