what led to his death?
Colon cancer.
Chadwick Boseman
Boseman was diagnosed with stage III colon cancer in 2016, which eventually progressed to stage IV before 2020. 
where is the dude from black panther from Anderson, South Carolina. who is chadwick? He was an American actor. can you name some of his films? “42”, "Get on Up” and "Marshall" (2017) are some of them. which was his breakthrough film? "42" where he portrayed a baseball player, "Jackie Robinson".
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Chadwick Boseman [SEP] Illness and death
Boseman was diagnosed with stage III colon cancer in 2016, which eventually progressed to stage IV before 2020. He never spoke publicly about his cancer diagnosis, and according to "The Hollywood Reporter", "[o]nly a handful of non-family members knew that Boseman was sick... with varying degrees of knowledge about the severity of [his] condition". During treatment, involving multiple surgeries and chemotherapy, he continued to work and completed production for several films, including "Marshall", "Da 5 Bloods", "Ma Rainey's Black Bottom", and others. Boseman died at his home as a result of complications related to colon cancer on August 28, 2020, with his wife and family by his side.