Help! Which law created quotas that made it harder for southern and eastern Europeans to immigrate to the United States and easier for northern Europeans?

the Chinese Exclusion Act
the Immigration Act of 1917
the Emergency Quota Act
the Johnson-Reed Immigration Act

What two important inventions did the people from this region share with society?

Which governing principle is best reflected by the representative government created by the constitution a. separation of opwer b. republicanism c. rule of law d. limited government

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste