Legal and social distinctions in which region were less sharp and increased the possibilities for a merging of culture?

Answer: Louisiana

Explanation:

Before the arrival of the Europeans in the sixteenth century, Louisiana was an abode for the red indians / native Americans.

People living in present day Louisiana are of different cultures and races. This is so, for instance in the eighteenth century, many Africans slaves were imported into Louisiana. Also, although it was not that long, Louisiana was a Spanish colony.

Louisiana is (mainy) compose of native Americans, Africans, French, and Haitians.

In the late seventeenth century, Louisiana was a colony of the French, in fact Robert Cavelier de la Salle, A French explorer who named Louisiana after King Louis XIV in the year 1682.

Louisiana has legal and social distinctions which were less sharp and increased the possibilities for a merging of culture.