Why does the aurthor examine the issue of slavery at the beginning of the article? ?

they killed other men

explanation:

ayatollah khomeini can best be described as the leader who declared iran to be an islamic republic.

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.