Because Europeans settled in the Americas lots of the Native Americans died. Most of them died because when the Europeans came over they brought new diseases with them which killed most of the Native Americans so the settlement of the Europeans effected the Native population badly
<span>economic opportunity and freedom from government control</span>
Oklahoma became the 46th state in 1907, following several acts that incorporated more and more Indian tribal land into U.S. territory. After its inclusion in the union, Oklahoma became a center for oil production, with much of the state's early growth coming from that industry.
The first year that had an Earth day was 1970. Earth day is to get people to cut down on pollution and recycle. It is to overall treat the earth better.
