What are some geographic and cultural reasons why so many Mexican immigrants settled in texas?

When conducting research for forming a hypothesis, which practice should historians follow?

Humans during the paleolithic era used fire for each of the following purposes except a. for cooking meat b. for use as a weapon c. for heat and warmth d. for treating animal hides select the best answer from the choices provided

This map is depicting the 16th century route of what explorer? a) hernando de soto b) james oglethorpe c) sir walter raleigh d) juan ponce de leon