What did the Pinckney Treaty do?

The treaty was an important diplomatic success for the United States. It resolved territorial disputes between the two countries and granted American ships the right to free navigation of the Mississippi River as well as duty-free transport through the port of New Orleans, then under Spanish control.

Explanation:   I read an article and summarized it for you

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.