Wow. The scariest part of your entire novel is that you might actually believe this. Remarkable.
Take a look at how fast attitudes change. Support for gay "marriage" has gone from near zero to near 50% in just a few years. How long did it take from the first sign of German instability to the fall of the Berlin Wall and reunification? How long from the attempted coup against Gorbachev, when no one predicted a threat to Soviet unity, to the dissolution of the Soviet Union? How long from the first frictions with King George III to the Declaration of Independence or from the Pearl Harbor attack by Japan to enthusiastic support for a war against Germany? How long for the Transcontinental Railroad to change our economy? My "novel" is far too detailed for an FR post, but think about it: what do you think would have happened if southern slavery had encountered Adam Smith's invisible hand from the wrong side of the economic balance?