people always say Christopher Colombus discovered America is that true if not who did because i saw that people from Tyre, Lebanon had already discovered it many centuries ago ( this was said by a german scientist I think)

Plz me in 1756 george washington was sent on a mission to, a. build a fort at the point where the allegheny and monogahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio valley.