During and after the Revolutionary War, disputes between the thirteen American states were mainly caused by:
1. Land claims made by certain states on the western territories: Different states had conflicting claims to land in the west, leading to disputes over territory boundaries and ownership. This issue created tensions and disagreements among the states, as each state sought to expand its territory.
2. Congress's decision to raise high taxes: The imposition of taxes by the Continental Congress to finance the war effort and establish a stable government sparked disagreements among the states. Some states believed the taxes were too burdensome, while others supported the need for revenue to support the war and governance.
3. The Southern states' proposal to form a separate nation: In the aftermath of the Revolutionary War, some Southern states, particularly those with agrarian economies reliant on slavery, considered forming a separate nation due to concerns about their economic interests and autonomy. This proposal threatened the unity of the newly formed United States and contributed to ongoing disputes between the states.