Pennsylvania did not accede to the ruling, however, and open warfare broke out between them and Connecticut, ending with an attack in July 1778, which killed approximately 150 of the settlers and forced thousands to flee.
The Western Reserve, which Connecticut received in recompense for giving up all claims to any Pennsylvania land in 1786, constituted a strip of land in what is currently northeast Ohio, 120mi wide from east to west bordering Lake Erie and Pennsylvania.