Answer:
the us tried to stop the spread of communism in Vietnam, it went badly because the Vietnam knew more area of land than the us did, resulting in unexpected attacks from the Vietnam. after quick attacks the Vietnam would retreat to the forest, where they had multiple bunkers that connected to one another so they could appear in multiple places in in a short amount of time.
The correct answer is C. A system of weights and measure for trade.
This is because the Harappan civilization did not establish a uniform set of weights and measures for use in trade.
B. Interchangeable parts were identical parts that could be exchanged for one another in the manufacture of guns, clocks, and other goods.
I think its Western Europe?
