Simplify the following text for a Grade 5 native English-speaking person.
Original: After the American Civil War , only a few of the Sepasco were left ; the last Sepasco died in a hut near Welch 's Cave and Lake Sepasco and was reported in the local newspaper in 1867 .
Simplified: After the Civil War , only a few of the Sepasco were left . The last Sepasco Indian died in 1867 in a hut near Lake Sepasco .