Answer:
To prevent the overtaking of their lands by the British people.
Step-by-step explanation:
The speech made by an Indian man named Ateawanto preceded the Seven Years War between Britain and France. The Indians had the support of the French people. In this speech by Ateawanto, he clearly warned of the British people from taking their lands. He noted that the Englishmen had encroached their lands to an extent which their fathers allowed but that they would no longer tolerate any more encroachment from them. He also told them to conduct their trade in their own part of the sea.
Below is an excerpt from the speech:
"We acknowledge no other boundaries of yours than your settlements whereon you have built, and we will not [that is, do no desire], under any pretext whatsoever, that you pass beyond them."