U.S. federal tax revenue is the total tax receipts received by the federal government each year. Most of it is paid either through income taxes or payroll taxes. In fiscal year (FY) 2021, income taxes will account for 50%, payroll taxes make up 36%, and corporate taxes supply 7%. The rest is made up of estate taxes, excise and custom duties, and interest on the Federal Reserve's holdings of U.S. Treasurys.
D is your answer. it gives a more specific answer than the other choices, plus it is true. Slavery has been around since Jesus time, so that's way longer than the 1500s
