Answer:
Radio-wave communications signals travel through the air in a straight line, reflect off of clouds or layers of the ionosphere, or are relayed by satellites in space. They are used in standard broadcast radio and television, shortwave radio, navigation and air-traffic control, cellular telephony, and even remote-controlled toys.
Explanation:
Answer:
The answer is The national government and states share power.
Explanation:
In a Federal system of governance, power is decentralised and is distributed to the state governments from the central government. Central.government holds thee majority of the powers yet the state governments possess significant powers and rights as well.
Answer:
A) Conquest of Persia by Alexander of Macedon.
Answer:the existence of slavery
Explanation:
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