wars shaped the worlds history

I am very interested on watching ancient-war shows (movies and TV shows)..

Most of them are based on past events, or simply historical..
(honestly) After watching the whole Jumong series (the time setting was the downfall of the Han dynasty)..
I realized, ancient civilizations always prepare for wars.. In order for their country to be powerful, they must go to war and conquer different lands.. After this realization,I grazed for my history book, I started reading the world history.. To my amusment, I found out that mostly of the major historical changes were induced by war.. The Persian empire fell against the Greeks.. The Egyptian empire fell unto the romans hands.. Tokougawa Era was ended by Meiji by means of war..

I concluded…

Wars changed the continents' status..
Wars changed the countries' culture..
Wars shaped the history of this world..