Final answer:
Terrorism is defined as any use of violence or intimidation against a government or civilians. It can be classified into domestic terrorism, which is attacks within the US without foreign influence, and international terrorism, which involves attacks globally by foreign groups or governments.
Step-by-step explanation:
Terrorism can be defined as any use of violence or intimidation against a government or civilians. There are two types of terrorism in the world which are domestic and international terrorism. Domestic terrorism in the United States is defined as any attack against the U.S. government or its people without the use of foreign influence. International terrorism is attacks carried out globally by foreign groups or governments.