Ghettos in Germany first were areas to contain Jews, but eventually those people also fed the concentration camps
modern technology such as social media allows for candidates to more easily connect to voters ... Having two major political parties represented. Coalitions.
I am not entirely sure about this one. But I believe that the "Emancipation Manifesto" signed by Czar Alexander II gave serfs land, or at least gave them the freedom to do what they wanted, like buying that said land.
No freedom of religion, or elections was yet to be had in Russia.
Humid tropical climate!! pacific islands usually have the best climate yearround!