NEW YORK (AP) — Half a year after his death, Chadwick Boseman was posthumously nominated for an Academy Award on Monday for his final performance in “Ma Rainey’s Black Bottom.” The nomination for best actor was widely expected but still historic. Boseman is the first Black performer ever nominated posthumously for an Oscar. Only six actors have previously been nominated after their death: James Dean, Spencer Tracy, Peter Finch, Ralph Richardson, Massimo Troisi and Heath Ledger. Two ultimately won: Finch for his performance in 1976′s “Network” and Ledger for 2008′s “The Dark Knight.” Boseman died in August of colon cancer at age 43.