Answer:
Europeans changed the New World in turn, not least by bringing Old World animals to the Americas. On his second voyage, Christopher Columbus brought pigs, cows, chickens, and horses to the islands of the Caribbean. Many Native Americans used horses to transform their hunting and gathering into a highly mobile practice.
The best answer would be C.
Any time a president dies in office, the future is uncertain. Nobody knows what his successor will do. In Lincoln's case, the future of slavery was in question, as well as the handling of the postwar confederacy
Shays Rebellion in 1786 and 1787 were a series of protests which occurred in Massachusetts. This was one of occurrences which showed the weakness of the United States government under the Articles of Confederation.