Among the key changes brought by the Hart-Celler Act: Quotas based on nation of origin were abolished. For the first time since the National Origins Quota system went into effect in 1921, the national origin was no longer a barrier to immigration.
By the late 1860s, Americans in various towns and cities had begun holding springtime tributes to these countless fallen soldiers, decorating their graves with flowers and reciting prayers.
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Some private ownership and opportunity for individual profit would be allowed
The were people that challenged the racial laws in the 1960's
The choices can be found elsewhere and as follows:
<span>(1) introduction of communism
(2) establishment of democratic governments
(3) colonization of the region
(4) movements to gain independence
</span>
The correct answer would be option 3. The origin of this practice can be traced to colonization of the region. Hope this answers the question. Have a nice day.