In your opinion, was it a justified (good enough) reason to invade a country?

In my opinion it is justified to invade a country if they kill one of your countries officials. For example ww1 began when Syria killed the duke and his wife of the Austro-Hungarian empire which the Austro-Hungarians inaded Syria.

Explanation:

lying without the limits of the several states; and may permit them, at such times, and in such manner as it

it took two men to wrestle rome back from chaos and turn a republic into an empire. in the first century bc, rome was a republic. power lay in the hands of the senate, elected by roman citizens. but the senators were fighting for power between themselves.