PLEASE HELP When we triangulate data we divide it into three groups

What is the line drawn on a production possibilities graph called?

Which two groups worked hard as miners and contributed to california's development, even though they faced discrimination? a.) the chinese and the mexicans b.) the irish and the native americans c.) the french and the chinese d.) the mormons and the mexicans

How did the attack on pearl harbor create a shift in america’s foreign policy (from 1939)?