In which of the following regions was the aztec civilization located?

central america
mesoamerica
the andes
south america

swahili people populated much of the coast of east africa, from kenya to mozambique. what does this indicate about the role swahili people played in this part of africa?

the swahili people brought islam to the region.
the swahili people were primarily pastoralists.
the swahili people traded up and down the coast.
the swahili people were primarily agricultural.