Answer:
Step-by-step explanation:
Contribution Notes
Mining 
-Discovery of gold and silver led to the rapid development of western territories 
-Mining towns were established and became centers of economic activity and culture 
Cattle 
-The cattle industry was a major source of income for western farmers and ranchers 
-Cattle drives were organized to transport cattle to markets in the East 
Ranching 
-The open range system allowed ranchers to graze their cattle freely on public land 
-Ranchers developed new breeds of cattle that were better adapted to the harsh western climate 
The Cowboy 
-Cowboys played a central role in the cattle industry, driving cattle to market and caring for them on the open range 
-The cowboy became a cultural icon, celebrated in popular literature and entertainment 
Irrigated Farming 
-Irrigation systems allowed farmers to cultivate crops in arid regions 
-Farmers developed new techniques for dry farming, such as planting drought-resistant crops