The Indians of the southwest culture group developed Irrigation techniques but the Indians of the Columbia plateau did not because the southwest is an arid region whereas the Columbian plateau is a region having abundant rainfall.
<h3>What is irrigation?</h3>
Irrigation is an activity to provide water to the soil for the growth of plants in a large area by various artificial methods like pumping, spraying, etc.
The irrigation techniques are required to be developed in the southwest region as it is an arid region, that is, the area where not enough water is available for plantation and cultivation of crops. In contrast, the Columbian plateau has got abundant rainfall which is enough for the plants and crops to grow.
Therefore, the irrigation methods have been adopted by Indians of the southwest region and not by the Columbian plateau area.
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I don't know if the sentences below the questions are multiple choice answers but they had to because a market failure has occurred and the market has not provided them
That's an interpretive question that would ask us to get inside the mind of Lincoln from a distance a century and a half away. We do know that Lincoln long had moral and political objections to slavery. He had outlined some of those thoughts in a speech given in Peoria, Illinois, in 1854. But Lincoln's views on what to do about slavery were something that took shape over time. In the Peoria speech, he suggested that perhaps slaves should be freed in order to be returned to Africa. But as the conflict over slavery grew and the Civil War became a reality, Lincoln became firmer in seeing this as a struggle not just over preserving the Union but also a battle for human dignity and the principle of equality. And so in the Gettysburg Address, in 1863, he affirmed the principle stated by the Declaration of Independence, that all men are created equal. The massive number of casualties at the Battle of Gettysburg certainly gave impetus to Lincoln's words about preserving the Union and government of the people, by the people and for the people. But those ideas had been central to Lincoln's worldview before Gettysburg as well as in that speech.
