What was the capital of korea before it split into two countries?

The answer is:

Seoul, was the capital of unified Korea for most of the past several centuries.

Explanation:

In August 1945, the two allies, divided control over the Korean Peninsula.

  During Joseon dynasty, before colonial period, Seoul was called as HanYang.

More than 60 years and millions of lives later, the accidental division of North and South Korea continues

a.) are both appointed for life