an enemy of my enemy is your friend
C.C never really helped america in any way. he never really "discovered" america that was B.S. he came with his folks to take over the native americans which caused them to leave an made them live in a small territory, even though N.A were here first.so they said alright "we'll take it from here, heres your guys area an we have the rest" C.C an his folks said (not exact) so basically he was a bully. which led up to to situations decades later as is racism, taking more lands.so i dont think its neccesary to have a "columbus day".
coming to america
Native Americans Genocide
after they talked, they got their own area to be in, not really satisfied.