What are the effects of cliff collapse?

hi there!

question - how does mountainous terrain affect settlements in a region? choose all answers that are correct.

groups trade with each other regularly.

people travel from settlement to settlement.

why: since they travel to go trade or visit it may be harder to get there because of the mountainous terrain.

hope this : )

what events in mexico's history might explain why the country continues to have difficulty improving social justice and economic opportunities for all people?