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juan perez explores the nortwest coast for spain.
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american explorers meriwether lewis and william clark follow the columbia river through washington.
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fort okanogan becomes the first american fur trading post in washington.
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washington becomes the forty-second state.
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seattle becomes a "gateway to Alaska during the Klondike gold rush
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mount rianier becomesthe fifth national park in the u.s.
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the space needle observation tower opens for the world's fiar in seattle.
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mount st. helens erups. the volcanic activity kills 57 people and causes a great amount of damage