Throughout history, to prevent the Civil War, the south could have accepted President Lincoln and his opinions on slavery and how the US was going to get its money. To have completely prevented a Civil War, the north could have accepted the south's secession.
If this is during WWI then this could spread to widespread war because of the alliance systems
In order to ensure that they had the water they needed for their farms, the Inca built large canal systems to irrigate, or bring water to, their fields. The canals also brought water to the cities. Many streets had supplies of fresh water running through a canal.
The compass, the astrolabe (instrument used to measure latitude), and the rudder <span>all helped European explorers on their quest to find Asia and get rich by by </span><span>buying spices there and selling them in Europe to get a profit.
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