Spain helped put clothes on the backs and guns in thehands of the soilders to ensure they won the revolution against the British. While John Adams grabbed much of his influence on the laws being created from Spanish influence. Things like Taxation without representation Adams and Locke directly source the Spanish. “Life Liberty and Property”… was sourced from Spanish rightings/law.

Throw in that Spain owned what became the Louisiana Purchase from 1762 to 1801 (in which the American Revolution occurred) I doubt they were looked upon as not people. France, Spain, American Revolutionaries vs Great Britain was the over arcing war at the time.

We only bought it from France because it was traded right before back to France for Tuscany, a treaty with Napoleon where the king of Spain wanted to give Tuscany to his daughter.