Maybe higher security and enforced laws over time
Also more morals and equality, especially against blacks.
Also the aftermath of the world wars- what was learned from it
Answer:
Some of the most popular ones are the Stars and Stripes (the US flag), the Great Seal of the USA, the bald eagle (our national bird), the Washington Monument, the Lincoln Memorial, the US Capitol, the White House, Independence Hall, the Liberty Bell, the Statue of Liberty (a gift from France), the Gateway Arch.
