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.
A) Those who will not work, could not eat.
The astrolabe was used to help determine the ship's latitude
Three of the mentioned events happened in the last (20th) centuty: Nafta went into effect in1994, Panama regained control over the Canal in 1970s and Fidel Castro was is still alive.
The event that came first was the following one: <span>(2) Simón Bolívar established Gran Colombia.
It happened in the 19th century. </span>
The effect of foreign conflict on Americans support would be the War of 1812 where British captured Washington, D.C. and burned our White House, and also U.S. forces turn back a British attack on Baltimore. The good thing that came out of the conflict was gaining our "Star Spangled Banner" from Francis Scott Key.