1) No wars would be fought to establish democracy.
2) Probably, China and U.S will be the "best friends". Their economy and market are completely dependent on each other. As mentioned in an iPhone - "Designed in U.S, Manufactured in China". ;)
3) Religion would exist only for the good reason, like for celebrating festivals or so.
4) No infant mortality rate (unless accidental), no female foeticide, child marriages, child labor.
5) Money spent on wars and defense will be used for scientific/medical purposes.
6) Probably, an end of capitalism as well.