The correct answer is - I, II, and III.
By the obscure information about the Region A and the size of the farmlands in it, we can roughly conclude that the Region A has a topography which is not allowing for larger farms to be formed, the people in that region are probably not financially very powerful, and that the farming is not heavily mechanized.
Very often the topography of a region can dictate the size of the farmlands, as there's only certain places that are suitable for farming. So if the region is mostly hilly and has mountains, the farmlands can be very big.
Another factor that can be crucial in determining the size of the farmlands is the financial power of the people. If the people can not afford to buy bigger land areas, than the farmlands will be relatively small.
If the farmlands are not big, than they can be worked with less mechanization, with the human and animal power being in the spotlight, but also, if the farmers are not financially strong enough, they will not be able to buy the needed mechanization.
Answer:
Until the Mexican-American War (1846–48) only a few Americans—explorers, soldiers, trappers, sheep drivers—visited Arizona. In 1851 the U.S. Army Corps of Engineers sent several expeditions into Arizona to find a suitable route on which to build a wagon road to California. To protect travelers, miners, and other settlers from Native Americans, the U.S. government began to locate army posts at key sites. In 1883 workers completed the Atchison, Topeka and Santa Fe Railway across northern Arizona, thereby linking St. Louis, Missouri, with California; that same year the Southern Pacific Railroad completed a line from New Orleans to Los Angeles by way of Tucson and Yuma.
Explanation:
Because of its geography it also had more rivers
