Complex sentence: Lake Superior Chippewa, Red Cliff Chippewa, etc. for nearly a half-century until his death in 1855, he led his nation into a treaty relationship with the United States Government signing treaties in 1825,1826,1837,1842,1847, and 1854.
Split into simpler sentences: Lake Superior Chippewa, Red Cliff Chippewa, etc. for nearly a half-century until his death in 1855, he led his nation into a treaty relationship with the United States Government. He signed treaties in 1825,1826,1837,1842,1847, and 1854.