Why is the red line between Missouri and the Arkansas Territory significant?

They separated slave states and free states

Explanation:

The path for slave abolishment in United States didn't happen overnight. There was one point in time when The opinion was so divided to the point where the federal government need to separate the States into two:

- Slave states, which allow slavery to be conducted.

- Free States which prohibit slavery.

The "Red line" between Missouri and Arkansas often used to refer to the separation between slave and free states. Basically every states that are located on the south eastern side of Arkansas were considered to be slave states.

answer: an oligarchy is a political system in which the government is run by a group of noble families, or the elite wealthy members of a society. a present day oligarchic government is iran.

explanation:

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.