Republicanism existed two thousand years before the French Revolution, and there were still republics in Europe. In India, the Buddha's kingdom had more in common with an aristocratic republic such as Rome than it did with feudal monarchies. The Roman Empire, which so many traditionalists are eager to recall, would not have existed if it remained under the Etruscan kings, and Carthage was a republic as well.
What do you mean by "tradition?" it might look good in video games, but feudalism wasn't that romantic in real life.