Answer:
D
Explanation: Poison Gas Attacks
The invention was the alternating current made by Nikola Tesla.
Answer:
Federalism is a type of government in which the power is divided between the national government and other governmental units. It contrasts with a unitary government, in which a central authority holds the power, and a confederation, in which states, for example, are clearly dominant.
Prior to the creation of the state of Israel, Palestine was under a British mandate. After World War II, as Britain's empire was slowly crumbling, it became clear there was a need for a Jewish state.