Answer:
The Columbian exchange, also known as the Columbian interchange, named after Christopher Columbus, was the widespread transfer of plants, animals, culture, human populations, technology, diseases, and ideas between the Americas, West Africa, and the Old World in the 15th and 16th centuries.The impact was most severe in the Caribbean, where by 1600 Native American populations on most islands had plummeted by more than 99 percent. Across the Americas, populations fell by 50 percent to 95 percent by 1650. The disease component of the Columbian Exchange was decidedly one-sided.
The Declaration of Independence states that the United States of America is a country in its own right, independent of England, and includes a list of grievances against the king of England, while the U.S. Constitution formed our federal government and set the laws of the land.
<span>A. British Monarch. One of the most fundamental differences between Canadian and American government is that Canada is a constitutional monarchy while the United States is a type of democracy known as a republic. As a constitutional monarchy, ("Canada's head of state is the British monarch"), who is represented in Canada by an official known as the governor general</span>
The Answer is a I just took the test, and it didn't eliminate the need of a railroad, nor was it constructed on a land with few plants or animals, it was in a jungle like environment.
ANSWER IS A