Which two types of terrorism does the federal bureau of investigations define as occurring in the united states? a chemical and biological b violent and intimidation c domestic and international d psychological and economic?

Answer is: domestic and international.
Domestic terrorism - terrorist have same citizenship as the victims of the terrorist attack. Some of domestic terrorists in US are: Charles Whitman, Eric Rudolph, Eric Harris.
International terrorism - when foreigners attack civil or millitary objests.

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