Where does congress derive the authority to stop a tax on internet sales?

Which amendment best addresses the fears of the federalists like james madison, that rights and powers not specifically listed in the consttuition or bill of rights will not be protected in the future

Full-service brokerage firms a. have lower commissions. c. provide no investment advice. b. offer portfolio management. d. teach you how to do market research.

Which application of a new technology can be attributed to an invention of thomas edison?