What ended the war and led the u. s receive calorfornia and the southwest

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

cultural history is your answer