Why was Washington concerned about the European interest in the northwest territory?

Washington was concerned about European interest in the Northwest Territory because it posed a threat to American sovereignty and expansion. The presence of European powers, particularly Britain and Spain, could undermine U.S. territorial claims and incite conflicts with Native American tribes. Additionally, Washington believed that European influence could hinder the young nation's growth and stability, jeopardizing its ability to unify and govern effectively. This concern was rooted in his broader vision of fostering a strong, independent America free from foreign entanglements.