When was the french and indian war justified?

The French and Indian War, which took place between 1754-1763, began due to a conflict between England and France over control of the Ohio River Valley. Both sides wanted the valley so they could expand their settlements into the area.French and Indian War/Seven Years' War, 1754–63. The French and Indian War was the North American conflict in a larger imperial war between Great Britain and France known as the Seven Years' War. The French and Indian War began in 1754 and ended with the Treaty of Paris in 1763.

the roman army grew in size and became dominant in the mediterranean region.