Answer:
He signed the Civil Rights Act of 1957 and sent Army troops to enforce federal court orders which integrated schools in Little Rock, Arkansas. His largest program was the Interstate Highway System. He promoted the establishment of strong science education via the National Defense Education Act.
Explanation:
They were striking a blow for freedom against imperialism(b)
The North Vietnamese forces, especially the Viet Cong made their own explosives. They used explosives that did not explode, cut them open and made their own improvised explosives. They used traps like bamboo maces or crossbows which were activated by trip wires. One common trap was the punji stake trap. This was a bed of very sharp bamboo stakes hidden in a large hole for their enemies to fall into.
The answer is: goods that are expensive and rare
