In my opinion Betsy Ross made the U.S. flag because there is proof that she made the first five sided star,it was found in Samuel Wetherill’s safe in 1776.She was already a seamstress and owned a seamstress shop.She already had connections with George Washington and Francis Hopkinson.Her flag was already in use before congress evan approved,also her flag was in a famous painting by one of the most famous painters in the revolutionary times Charles Willson Peale.