How might the city-states of Athens and Sparta have focused on different regions when trading?

What river valley civilization in the plow

Which best describes california population when it became a state in 1850? a. because of the gold rush attracting settlers all over the world california population diverse. bcalifornia had banned foreign immigrants at the start of the gold rush. so, the states population was made up of entirely of americans from other parts of the country. c california had a large african population because many southern planters had moved their enslaved africans to start large farms. d the indian removal act had led to the relocation of thousands of eastern native americans to california. as, a result the majority of californias population was native american

According to the aztec history, how did the aztecs know where to build their new city of tenochtitlan? why was this a good location?