Who were the first permanent american white settlers in oregon? a. fur trappers c. forty-niners b. mormons d. missionaries?

D. Missionaries was the first permanent American white settlers in Oregon Country. In 1820’s, settlers and trappers to move to Oregon because of the lure of fertile lands, furs, plentiful rainfall, and a mild climate. The trail on traveling to Oregon Trail start from Independence, Missouri where eases or illnesses was the BIGGEST threat to those who travel.

Convent bonding of cross linking constrain polymer chains from relative movements. the degree of cross linking will correlate with the stiffness of the polymer. highly cross-linked polymers will also have a high resistance to creep as the chains cannot move into new positions.

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