Your answer is going to be C.
The Indus River valley was a Bronze Age civilization mainly in northwestern regions of South Asia, extending from what is northeast Afghanistan to Pakistan and northwest India.
To that end, Congress passed the Selective Service Act, which Wilson signed into law on May 18, 1917. The act required all men in the U.S. between the ages of 21 and 30 to register for military service. Within a few months, some 10 million men across the country had registered in response to the military draft.
So it is D
Isolation
I put indifference as said below and I got it wrong
What does this mean exactly