Which of the following was contributing factor to the spread of the depression around the world

i believe the answer is d.

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.

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

can i have brainlest

it granted civil rights to african americans.