It would be "(D) the bombing of the Oklahoma City Federal Building," that is not associated with Al Qaeda, since this was an act of "domestic terrorism," that was carried out by a Christian white male.
Direct democracy (also known as pure democracy) is a form of democracy in which people decide policy initiatives directly. This differs from the majority of modern Western-style democracies, which are indirect democracies.
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Harry S Truman is your answer
By 1279, the Mongol Empire covered over 33,000,000 km² (12,741,000 sq mi), up to 22% of Earth's total land area. It held sway over a population of over 100 million people.
The Answer is
South Vietnam surrendered after Saigon fell.