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implemented


put a plan or law into effect

Jenny wasn’t happy when her school implemented a strict uniform policy.

implemented

arid


extremely dry; receiving little or no rain

A cactus can go long periods of time without fresh water, helping it survive in arid places.

arid

discrimination


unjust behavior toward others based on differences such as race, religion, or nationality

In 1955, Rosa Parks stood up to discrimination by refusing to give up her seat on a bus in Montgomery, Alabama.

discrimination

polls


surveys of people’s opinions or beliefs

The students used polls of their classmates to find out their favorite summer pastimes.

polls

economy


a country’s system for managing its money and resources (such as workers and land) to make, buy, and sell goods and services

When a nation’s economy is strong, many people have jobs.

economy
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