Although when Christianity appeared the total population of the planet was only a fraction of that of the twentieth century, most of the earth's surface was quite outside the Mediterranean world, Persia, India, and China. ↗
Quite likely the twentieth century is destined to see the natural forces which will enable us to fly from continent to continent with a speed far exceeding that of a bird. ↗
As in Athens, the right to participate was restricted to men, just as it was also in all later democracies and republics until the twentieth century. ↗