Provide an example of an invention and explain how it either increased trade or contributed to economic growth and prosperity.

it let Africa known in the society. it helped people come through Africa with the trade routes. the growth of economy was started with the abundant supply of gold, ivory, hides and slaves

Explanation:

that is because lower interest rates allowed people to work harder to make money. it multiplied like that and now the uno(not the game) is very strong.

i like trains