Match the region in column 1 with the description in column 2.
a. western canada

1.had long-lasting tensions with the rest of canada

b. central mexico

2.contains one of the most important economical states in the united states

c. west coast

3.split by the rocky mountains

d. french canada

4.original location of the aztec empire

French Canada - Had long-lasting tensions with the rest of Canada

Central Mexico - Original location of the Aztec empire

West Coast  - Contains one of the most important economical states in the United States

Western Canada - Split by the Rocky Mountains

Explanation:

French Canada has always had some "tensions" with the rest of Canada, not necessarily resulting in conflict but they are a different ethnic group with a different language and different culture.

Central Mexico was the original location of the Aztec Empire, which was an alliance between three city-states located in the Valley of Mexico

The West Coast contains one of the most important economical states in the US: this is California, one of the most populated and the state with the highest GDP

Western Canada is split by the Rocky Mountains, the mountain range crossing most of Western North America