Who improved the sewing machine

Elias Howe

Explanation:

A decisive improvement was embodied in a sewing machine built by Walter Hunt of New York City about 1832–34, which was never patented, and independently by Elias Howe of Spencer, Massachusetts, patented in 1846.

Hope this helps:)

answer; i do believe that the (14th)fourteenth amendment is the correct answer

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.