But so able and convincing were the arguments which Mr.Adams directed Mr.Rush to lay before the British Ministers, in defence of the proceedings of Gen.
Jackson, that they became convinced there was no just cause of war between the two countries, and exerted their influence against any movement in that direction.
On the 22nd of February, 1819, a treaty was concluded at Washington, between the United States and Spain, by which East and West Florida, with the adjacent islands, were ceded to the Union.

The negotiations which resulted in the consummation of the treaty, were conducted by Mr.Adams and Luis de Onis the Spanish Ambassador.

This treaty was very advantageous to the United States.

It brought to a close a controversy with Spain, of many years' standing, which had defied all the exertions of former administrations to adjust, and placed our relations with that country on the most amicable footing.

In effecting this reconciliation, Mr.Adams deserved and received a high share of credit.
The recognition of the independence of the Spanish South American Provinces, by the Government of the United States, took place during Mr.
Adams's administration of the State Department.