Select the three regions explored by columbus.
a. philippine islands
b. coast of north america
c. caribbean islands
d. coast of greenland
e. coast of central america
f. coast of south america

i think it is Caribbean islands, coast of north america, and coast of central america

tenochtitlan (also spelled tenochtitlán), located on an island near the western shore of lake texcoco in central mexico, was the capital city and religious centre of the aztec civilization. the traditional founding date of the city was 1345 ce and it remained the most important aztec centre until its destruction at the hands of the conquering spanish led by hernán cortés in 1521 ce, which led to the final collapse of the aztec empire.

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