Would would happen if the French-English hundred years war lasted just 50 years causing spain and holland to rage at each other earlier, thus escalating the entire european history go 50 years fast?

Would Unification of Germany happen in the 1820s, would events of both world wars would escalate half a century before? Would Teddy Roosevelt get shot in Detroit? Would a chasrismatic Jack Kennedy cheat on his wife during his second term as president? Would Malcom Little be the USA's first black president? Would we in 2011 be colonising the solar system and exploring outer space? Or be living in caves hiding against the harsh climate of a nuclear winter?