Answer: Expansion of the railroads.
You have to be a citizen with citizenship. to vote:-)
They isolated the area of China from outside places preventing things like invasion and impeded cultural diffusion and trade to a degree. Its one of the reason China holds a xenophobic attitude because it was created in relative isolation and its natural forms allowed it to be isolated so it helped to reject outside culture.
I know penguins live in Antarctica.
In this experiment, most of the subject were able to correctly match the names to the gender of the actual child.