They made Channels underground a lined with clay to prevent sepage in the surrounding soil. They were a big contribution and we still do something inspired by that today.
Answer:
In July 1954, the Geneva Agreements were signed. As part of the agreement, the French agreed to withdraw their troops from northern Vietnam. Vietnam would be temporarily divided at the 17th parallel, pending elections within two years to choose a president and reunite the country.
A company that overcharged Union Pacific on purpose so the stockholders could pocket the difference and give some of the money to Congressmen
