The reason for the rise in the age of consent was a weakening of the institution of marriage.
[/spoiler]Genocide is costly, not just for the victims, but also for the perpetrators. Any country which is willing to genocide its enemies degrades its ability to forge alliances and engage in diplomacy. If alliances and diplomacy are liberal or leftist ideas, then consider Caesar, Alexander, and Genghis Khan to be a leftists.[/spoiler]
Genghis Khan began by uniting warring Mongol tribes, and executing the Mongol nobility who opposed his centralization of power. It was his diplomacy, tact, and skillful alliance building that allowed Mongols to overcome petty differences and unite as a world-historical force. Similarly, Napoleon didn’t conquer Europe by exterminating the Germans, but by integrating them into his army. When Napoleon marched into Russia, his Grande Armée was two-thirds French, and one third non-French.
When Alexander the Great conquered Persia, instead of exterminating the Persians, he ordered his generals to adopt Persian customs and marry Persian women. Doing so was an attempt to integrate or “reverse assimilate” into Persian society. When the Normans settled into northern France, they adopted the French language and French culture. If cultural chauvinism is a feature of the right, then these sorts of concessions can be viewed as a feature of the left.
