Historians should use more than one source because, if they do it will make there knowledge more creditable
The Immigration and Nationality Act of 1965, also known as the Hart–Celler Act, changed the way quotas were allocated by ending the National Origins Formula that had been in place in the United States since the Emergency Quota Act of 1921. Representative Emanuel Celler of New York proposed the bill, Senator Philip Hart of Michigan
Answer:
Your answer to this question will be C. Triangular trade.
Explanation:
