Why did the argriculture remain the leading occupoation of americans in hthe 1800s

answer; ///i do believe that the correct answer for the above is ( which states would be free and which states would have check first good

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.