It is one of the main causes for the war.
The voyages of Zheng he, development of blue and white porcelain, and the establishment of the forbidden city are all associated with the: Ming Dynasty
Zheng he held the position as the fleet admiral during the Ming Dynasty and became the first Chinese mariner that opened up the map from China to South East Asia. During this period, Ming Dynasty also created a city that's exclusively resided for Nobles and High Government official called the Forbidden city.
It's B. The Columbian Exchange is just that, the exchange of goods, plants, people, etc. between Europe and the Americas
Answer:
Louisiana Purchase: The Land Deal of the Millennium. For a mere $15 million, Thomas Jefferson doubled the size of the United States, buying 800,000 square miles from the French that stretched from the Mississippi River to the Rocky Mountains.