The Beringia Land Bridge used to separate the Bering Sea and the Arctic Ocean. ... During Ice Age, water was stuck in glacial ice and sea levels dropped. As a result, a land bridge formed and separated North America from Asia.
Answer:
The Cumberland Road, also known as the National Road or National Turnpike, was the first road in U.S. history funded by the federal government. It promoted westward expansion, encouraged commerce between the Atlantic colonies and the West, and paved the way for an interstate highway system
Explanation:
One example of a difficulty is why they had wars. Primary recourses would and DO show the reason of why they had those arguments and fights. Another thing is Politically, for example, when the Senators stabbed Julius Caesar, without a primary source, we wouldn't know who stabbed him to death! We could have been falsely looking at a different person.
