Question

since 1970, why did most of the 12 million people from latin america immigrate to the us?for improved educational opportunitiesto escape war and government persecutionfor improved economic opportunitiesto be with family already in the us

Explanation:

Post-1970, Latin American economies faced instability, limited jobs, and low wages. The US offered far stronger economic prospects, including higher-paying work and better financial security, which was the primary driver for the majority of these immigrants. While other factors played minor roles, economic opportunity was the dominant push-pull factor.

Answer:

for improved economic opportunities