<span>The decimal system is from </span>the Gupta Empire.
Congress didn’t have the power to enforce their own laws. Because of the fear of tyranny, the AOC was established to give more powers to the states than the federal government. While Congress could write laws, there was no Executive branch or authority to enforce the laws. Each state could except or reject the law, making congress, and the central government, ineffectual. The AOC would eventually fail and be replaced by the Constitution.
The Monroe Doctrine's main purpose was to "<span>D. to warn European nations not to form new colonies in the Americas". It was a declaration of true sovereignty in the US. </span>
Today, the Indus Valley is in modern-day Pakistan and India.
The Battle at Antietam Creek was the bloodiest single day in American history.
