What challenges did the Aztecs face when they settled in the valley of Mexico?

Mountains were Steep and little level for farming.

Explanation:

Explanation:

Mountains were Steep and little level for farming. They also had Little wood or stone for building.

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d.

the northwest territory became the most densely populated area in the u.s.

it met the katy line in vinita.

iv. it traveled through cherokee and quapaw tribal lands.