What was a main concern when deciding the placement of all new capitals other than population movement?

A main concern when deciding the placement of all new capitals other than population movement is described below in details.

Explanation:

The term "capital" introduces from Latin capitalism, indicating "of the head". As the town at the peak of the nation, it is connected to the state and entertains the position of the government and, if they endure, usually authority too. The capital requires to be guarded, but also able to exercise control and outline unity.

answer; validity;