Assertion details
Summary
river's water attract 1 thousands of settlers
1 triples in cluster
water attract thousands of settlers 1
1 source sentences
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  • SRC In the middle part of the 19th century , the Willamette Valley 's fertile soils , pleasant climate , and abundant water attracted thousands of settlers from the eastern United States , mainly the Upland South borderlands of Missouri , Iowa , and the Ohio Valley .