<P> 7 . To establish post offices and post roads; </P> <P> 8 . To promote the progress of science and useful arts, by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries; </P> <P> 9 . To constitute tribunals inferior to the Supreme Court; </P> <P> 10 . To define and punish piracies and felonies committed on the high seas, and offenses against the law of nations; </P>

What are some important powers the constitution gives to congress