Describe one way in which musa encouraged cross cultural interactions during his reign?

By Turning his kingdom into an advanced learning center of In the Islamic world.

Explanation:

During his reign, Mensa Musa developed cities like Timbuktu and Gao  and turned them into both learning and cultural center that opened to all scholars all over the world.  Sankore Madrasah was  probably one of the most wide-known learning center between them all.

Creating this learning centers encouraged many students from Asia, Europe, Africa, and middle east to come in and study there. This encouraged cultural interaction between different nations.

e imma say squidward tentacles

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.