I think aggressive ambition of conquest and empire building
In 1925 Clarence Darrow defended John Scopes who was charged with teaching his students about evolution which broke Tennessee law.
True, post WW2 Japans economy boomed and especially in that time they became a world economic power and today they are still one of the strongest economies in Asia.
The main reason that the Constitution did not proclaim all men to be free and equal is because of the issue of slavery. Many of the Founding Fathers were slaveowners, including George Washington. The Founding Fathers did not want to lose the support of southern states when it came time to ratify the Constitution.