Final answer:
The British pushed west during the Revolutionary War to gain control over the colonies and restrict their territorial expansion.
Step-by-step explanation:
The British pushed west during the Revolutionary War in an effort to gain control over the colonies and restrict their territorial expansion. They focused on capturing key cities and strategic locations in order to isolate New England from the rest of the colonies. The British also gained support from Native American tribes in the Ohio River Valley region, who aligned themselves with the British forces.