How did ISIS become so powerful?

Baghdadi's freashly formed ISIS then grew from its al Qaeda roots as it tried to fight for control in Syria from its own offshoot group Jabhat al-Nusra.

the phenomenon that would be cited as evidence of increased economic interdependence between europe and the americas is  the development of mercantilism.

this theory suggests that the wealth of a country depends on its economic assets, or capital.

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a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."