What were the three important natural resources in the mid to late 1800's?

What happened after tunstall was murdered? how did billy the kid react to theviolence?

What led to the environmental damage that caused the dust bowl? 1. desert winds emerging from the southwest 2. rotating crops every year and having fallow land 3.overplanting throughout the great plains 4.a year-long drought

Brainliestttme : ) what are trading blocs and what is the impact of international cooperation?