<span>A strong study establishes validity because it is important that the researcher measures what he or she intends to measure.
Validity in a study means that it is logical, sound, and reasonable - that the researcher has done his or her job properly, measured everything correctly, and has come to certain conclusions which could be proven and checked if necessary.
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Answer:
Jamestown was founded for commercial profit.
James K. Polk thought the United States should have all of Oregon territory even if it meant war with Great Britain.
