The correct answer to this open question is the following.
Although there are no options attached or further reference or context, we can say the following.
By using the <em>railway system,</em> farmers could reach any market in the nation.
When railways started to be constructed in the country, farmers saw this as a great opportunity to reach new markets nationwide for their crops. Before trains, farmers were limited by their own transportation means to take their crops to other places. Often times it was only close places where horses or wagons could get.
But with the advent of the modern railway system and more specifically, with the inauguration of the Transcontinental Railroad on May 10, 1869, farmers could transport their coast from east to West.
