Why did the population of Alaska increase dramatically in the late 1890s?

The U.S. purchased Alaska from Russia in 1867. In the 1890s, gold rushes in Alaska and the nearby Yukon Territory brought thousands of miners and settlers to Alaska. ... The construction of military bases contributed to the population growth of some Alaskan cities. Alaska was granted U.S. statehood on January 3, 1959.

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.

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