And then, to have to deal with large groups, say, at the nation-state level, and we had to have mutual non-aggression, or through a series of conflicts, we eventually came to a rough international bargain to largely keep the peace.
Y luego, para tratar con grupos grandes, digamos a nivel nacional-estatal para prevenir la agresión mutualmente, o unos series de conflictos, finalmente hemos llegado a un acuerdo internacional improvisado para más o menos guardar la paz.