What geographic feature were many of the Plateau Tribes (Colville, Chelan,
Wenatchi, Wala Wala) located near?

Explanation: Although there were many geographic features near the Plateau Tribes, perhaps the most important one was the Columbia River, which provided large amounts of salmon and eel for the tribes.The area also is surrounded by the Cascade Mountains, and Sierra Nevada Mountains on the west, and part of the Rocky Mountains on the east side, and the Columbia Plateau. Over forty seven tribes lived in this area.

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.

mount st. helens in washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. ash from the volcanic eruption fell as far away as minnesota. seismic activity at mount st. helens, which is 96 miles south of seattle, began on march 16.