What term refers to a landmass made up of many continents?

The question that you asked should be" What term refers to a landmass made up of many Countries?" 

So the answer would be a Continent.

Cultural convergence is the theory that two cultures will be more and more like each other a very notable example of this is around the u.s.-mexico border, where 

Ibelieve it is the 2nd answer, create gardens on all rooftops. let me know if this .