Irrigation allowed crops to be grown further away.
<span>Earl Warren (1891-1974) was a prominent 20th century leader of American politics and law. Elected California governor in 1942, Warren secured major reform legislation during his three terms in office. After failing to claim the Republican nomination for the presidency, he was appointed the 14th chief justice of the U.S. Supreme Court in 1953. The landmark case of his tenure was Brown v. Board of Education of Topeka (1954), in which the Court unanimously determined the segregation of schools to be unconstitutional. The Warren Court also sought electoral reforms, equality in criminal justice and the defense of human rights before its chief justice retired in 1969.</span>
Central America especially Guatemala southern Mexico and El Salvador
<span>B) The railroads and improved communication made expansion easier.</span>
The answer is - hunter-gatherers.
The Archaic Indians in North America were hunter-gatherers. They were reliant on hunting animals and gathering plants and their fruits and vegetables for survival. Still, in the early period until the landscape changed its appearance after the end of the ice age, they were mostly focused on hunting, and they were usually hunting the big game animals, including the bison, and also the mammoth, wild horses, giant sloth, before they went extinct. This was due to the living conditions in that period, and that the agriculture was still not taking place in their societies.
