They had to build d reservoirs and irrigation ditches to control river flooding
Buddhist monks made their way through silk road in first century CE and thereby Buddhism got spread across China and other parts of Asia.
Explanation:
After having its roots in China, Buddhism expanded to Central Asia, Korea and Japan. This form of Buddhism later got spread in East Asia which was known as Mahayana and then the same culture started to expand and flourish in Tibet and Nepal in the name of Vajrayana.
These countries adopted various traditions and cultures which significantly varied on the basis of Buddhist teachings and scriptures. Burma, Myanmar and SriLanka also absorbed the teachings of Buddhism and many Buddhist monks formed monasteries and began to spread the teachings of Buddha around the world.
Why Chaucer wrote The Canterbury Tales?
(Selectable sources for further study on The Canterbury Tales and Geoffrey Chaucer.) About The Canterbury Tales: Geoffrey Chaucer wrote The Canterbury Tales, a collection of stories in a frame story, between 1387 and 1400. It is the story of a group of thirty people who travel as pilgrims to Canterbury (England).
Its because science came to be that it relied on big projects. I hope I could help! :D