Answer:
The islands of Puerto Rico and Cuba have a great deal in common. As near-neighbors in the Greater Antilles island chain, both lie in the Caribbean between Florida and Venezuela. Both share Spanish origins, and both islands have played key roles in the history of the Americas.
Explanation:
Yo soy de Mexico y mi nacionalidad es mexicana
The Mayan number system. This one thing developed alot in the Acient Mayan Civilization