Why was the U.S. was a union built upon compromise?

The U.S. was a union built upon compromise due to the diverse interests and regional differences among its states, particularly concerning issues like slavery, representation, and economic policies. The Founding Fathers made significant concessions during the Constitutional Convention, such as the Great Compromise, which balanced the needs of both populous and less populous states in representation. Additionally, the Missouri Compromise and the Compromise of 1850 exemplified efforts to maintain unity despite deep-seated divisions, highlighting the necessity of compromise in achieving and preserving the union.