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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The three major migration of
African-Americans during the current distribution in the US are the following:
1.
Forced relocation from
Africa slavery
2.
Great Migrations from the
south to the north before and after WW I and WW II to slog in the factories
3.
<span>Development of the ghettos
to neighbouring areas during the 1950s and 1960s.</span>
<span>U.S. domestic oil production peaked in the year </span>1970