The correct answer is B.Patricians owned most of the land and either rented plots of land for plebeians to farm, or had slaves farm the land
The slaves however were not based on race and anyone could become a slave due to debts or as war prisoners. Slavery was common but one could become free if they successfully run away for a while without being caught or if freed.
The Mexican-American War, waged between the United States and Mexico from 1846 to 1848, helped to fulfill America's "manifest destiny" to expand its territory across the entire North American continent.
The modern Agricultural Revolution was started by the increase in farm technology and new ideas like crop rotation.
Primarily alternative way that these railroad companies used their land was to either sell it or rent it out to private business, and occasionally individuals, since the rail companies did not always need all the land they were given for development.