CREATE TABLE table_6519 ("Nation" TEXT, "Removal treaty  ( year signed ) " TEXT, "Years of major emigration" TEXT, "Total number emigrated or forcibly removed" TEXT, "Number stayed in Southeast" TEXT, "Deaths from warfare" TEXT)

How many warfare deaths befell the choctaw nation?
SELECT "Deaths from warfare" FROM table_6519 WHERE "Nation" = 'choctaw'
SELECT "Deaths from warfare" FROM "table_6519" WHERE "Nation" = 'choctaw'