Canals, Reservoirs, Dams
(I’m not 100% sure, but though they used flooding to their advantage it wasn’t a form of water control)
Answer: an economic phenomenon where two parties each hold an item the other wants, so they exchange these items directly without any monetary medium!!
hope this helped :)
Which trend during the 1920's does this image reflect?
I pretty sure it's sorry if its wrong.
The Growth of the advertising industry
Answer: Originally, the whole point of the war was to preserve the Union. However, the Emancipation Proclamation made the war about the abolishment of slavery.
Climatologists could evaluate their expectations of the emission on worldwide temperatures.
The action of Ancestral Pinatubo appears to have started around 1.1 million years prior and presumably finished a huge number of years or more before the introduction of "present day" Pinatubo. A significant part of the tough land around the present spring of gushing lava comprises of remainders of "hereditary" Pinatubo. It was an andesite and dacite stratovolcano whose eruptive movement was substantially less hazardous than present-day Pinatubo. Its inside was generally where the present well of lava is.
