Answer:
The mother ditch, or main ditch or canal, leads water to the headgates, which control the main flow. Lateral ditches run perpendicular to the main ditch and bring water to the fields for field irrigation. A drain canal brings water back to the stream.
Explanation:
When it was designed, it was the largest dome in the world.This immediately created problems as its size prevented the traditional method of construction. Its structure is a double shell supported by sturdy pillars.
<span>A few reasons that Italy and Germany most likely supported the nationalists during the spanish war was that they expected the nationalist to be friendly to them and that would give them an ally in Europe. Additionally, it was a chance to train their war strategies, while keeping Spain from gaining power. Italy and Germany also opposed overthrowing the existing government, and wanted to promote the spread of fascism. They also hoped to take over Spanish territory after the war.</span>
C. Acueducts.
I'm sure that's it, good luck ;)