Was Louisiana a french or Spanish colony?
Both... it was first a French colony, was then
transferred over to Spain, and then transfrerred back to French in
1800 in the Third Treaty of San Ildefonso.
I am pretty sure it was a french colony. France gained Louisiana and then sold it later on to the United States in the Louisiana Purchase. In case you didn't know the Louisiana Purchase was bought for approximately 15 million dollars.
One unique characteristic of the French colony of Louisiana is that it was named after King Louis. Hence the name LOUISiana. The first Louisiana legal code was written in French. It is the only state that based its laws on French and Spanish legal codes. All other states are based on the common law and thus the law in Louisiana is vastly different than the law in all the other states in the US.