The unification of kingdoms of Aragon and Castilla. The Kindom of Castilla owes its name to the great castles that was built in the area and it controlled the Iberian peninsula while the Aragon controlled the areas in Barcelona,and was a confederate. the unification of these kingdoms through the marriage of John and Isabella was the beginning of the glory of Spain in the medieval ages.
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Industrialization leads to urbanization by creating economic growth and job opportunities that draw people to cities. The urbanization process typically begins when a factory or multiple factories are established within a region, thus creating a high demand for factory labor.
Hinduism and Buddhism are firmly related. Buddha was a Hindu sovereign before establishing his own way to edification. For westerners, I'll frequently say that the connection between the two resembles the connection amongst Judaism and Christianity in some ways. Christianity was enlivened by the life of a Jew and Buddhism was roused by the life of a Hindu.
The first ten amendments are called the Bill of Rights.
During then great depression, the national unemployment rate across united states peaked at 25% although the rate in African-American communities was much worse at close to 50%
So the answer is: African-American