Answer:
Beginning in around 1800 BC, a group of nomadic peoples known as the Aryans suddenly and swiftly overwhelmed and conquered the Indus River Valley Civilization, probably entering through the Khyber Pass.
Explanation:
It says what you learned from the picture above but their is no image attached
(a) is the answer in studying this actually!
Answer:
Microwave ovens and space travel
Explanation: