Native Americans Rights

It means old library or a place that sells old books.  They can be found in Paris as well as Madrid.  They usually sell very old and very literary works.  There is a big demand for such books for their high value and rare works.

its a bookstore that buys and sells used books

The right answer is D.The European power did not create boundaries based on tribal divisions and forced rival tribes to live with each other.African's huge variety of languages and cultures discouraged unity among them. Wars fought between ethnic groups over land, water, and trade rights also prevented a unified stand. Europeans soon learned to play rival groups against each other. The competition between European nations was so fierce that they feared war among themselves. To prevent conflict, 14 European nations met at the Berlin Conference in 1884-85 to lay down rules for the division of Africa. The Europeans nations divided the continent with little regard about how Africans ethnic or linguistic groups were distributed. No African ruler was invited to attend their meetings, yet the Conference sealed Africa's fate.

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It was necessary because the civil rights movement had become stronger and stronger, the previous way of dealing with immigration was based on the national-origins quota system stablished in the 1920's. In this way each nationality was assigned a quota based on it's representation in past U.S. census figures. As you can see, this tended to discrimination, specially towards Greeks, Poles, Portuguese and Italians.

As the civil right movement claimed that all human must have the same rigths, this had to be modified. The Immigration and Naturalization Act of 1965, abolished the previous quota system and stablished an immigration policy which main goals were reuniting immigrant families and attracting skilled labor to the U.S.