Answer:
A telescope
astronomers use special telescopes to study x ray and gamma ray emmisons
Answer:
Explanation:
Hello is there any image to this?
Answer:
When did the US restrict immigration?
In the 1920s, restrictions on immigration increased. The Immigration Act of 1924 was the most severe: it limited the overall number of immigrants and established quotas based on nationality. Among other things, the act sharply reduced immigrants from Eastern Europe and Africa.
Explanation:
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