. Which battle during the Vietnam War is considered to be the worst "friendly fire" event in world history?

A. My Lai Massacre
B. Tet Offensive
C. Battle of Hue
D. Battle of Dak

There are 25 elements found in living things. how many of these elements are found in some organisms but not all? 1 , 6 , 19 , 25

The persian wars started when emperor darius i began an invasion of greece. what caused darius to decide to attack greece? a. greek pirates had raided persia's merchant ships and coastal towns. b. greek armies had attacked and taken over land that belonged to persia. c. greek city-states had supported rebellions in the persian empire. d. greek leaders had declared independence from the persian empire.

Which trade organization is responsible for 90% of the world's trade? the eu asean the wto o nafta