At the mouth of the nile river it has a huge what?

It is the second answer

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city. 

The answer is itprovides information about locationis a network of satellites orbiting the earth

The answer is a for sure