The 1808 Slave Trade Compromise in the Constitution.
Joseph I of Spain was the King of Spain between 1808 and 1813.
France
Joseph Bonaparte
The brother of Napoleon who was made King of Spain was King Joseph I Bonaparte and he reigned from 1808 to 1813.
Napoleon occupied Spain from 1808 to 1814.
Spain and Portugal.
Spain
Spain felt threatened by France because France invaded Portugal in 1807, and Spain in 1808.
Into Spain and Portugal in the Peninsular War.
Napoleon Bonaprate's brother Joseph was appointed to be King of Spain under French Occupation in 1808 until Spain was restored to Spanish Control in 1813. He ruled es King José I. There has not been a King Joseph or King José before or since.
The constitution stated that it could not affect the slave trade until 1808. That's pretty much it.