What policy did the US government follow in driving the Indians westward ?

(i) After the American war of independence and the formation of the USA,
the White Americans began to move westward.
(ii) They felt that this area could be cleared and turned into cultivated fields.
Forest timber could be cut for export and mountains could be mined for
gold and minerals.
(iii) Then the US government opted for a policy to drive the American
Indians westward first beyond the Mississippi river and then further
west.
(iv) Many wars were waged against Indians in which many Indians were
killed and their villages were burnt.
(v) The Indians resisted, triumphed in many wars but were ultimately
forced to sign treaties, give up their land and move westward.