Why were the French mad at the English colonies

The french became upset when English colonists began settling in the Ohio River Valley. In 1753 the French in Canada began building forts in the Valley. The French wanted to protect the land from the British. This resulted in the British attacking in self defense. They thought of it as the zfrench preparing to attack. This became known as the French and Indian War in the colonies. Both sides British and French were accompanied by Indian allies