21.2
Comstock Load
Bonanza
Mining dangers
Boomtowns
Pony Express
Transcontinental Railroad
Pacific Railway Acts
The Great Race
Leland Stanford
Railroad Effects
21.2
Texas Longhorn
Cattle Drive
Joseph McCoy
Kansas-Pacific Railroad
Cattle Kingdom
Open Range
Elizabeth Collins
Charles Goodnight
Range Rights
vaqueros
Nat Love
Round Up
Chisolm Trail
Range Wars
21.4
Sod Busters
Dry Farming
Homestead Act
Morrill Act
Exodusters
Cyrus McCormick
