I believe the answer is: by making a joint statement against France
By doing this, the France became very reluctant to send their millitary to colonize united states since they are afraid of British' millitary power that back us up. In return, American people had to agree to sell various type of resources to the british empire at a particularly low prices.
Answer:
By making a joint statement opposing colonization
Explanation:
They both decided they wouldn't allow new colonization in their land and joined forces to prevent war
