Who among the following was the first to invade India?
(A) Xerxes
(B) Alexander
(C) Darius-I
(D) Seleucus
Answer: (C) In about 518 BCE, the Persians invaded India. They were led by King Darius I, who conquered the Indus Valley and the area that is now the state of Punjab. Darius-I was successful in maintaining power, and his descendants continued to rule the area when he died. Darius-I also began to collect a tribute tax and spread the news of India’s many natural resources to Europe.