Antipoverty programs that are set up so that the amount of government benefits will decline substantially as poor people earn more income typically create

a poverty trap

Explanation:

According to my research on government benefits and Antipoverty programs, I can say that the situation described within the question typically creates - what is called - a poverty trap. This is defined as a self-reinforcing mechanism that causes poverty to persist. This is usually known as a "cycle of poverty".

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explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.