Pennsylvania acquired the property from the Untied States government through purchase.
Pennsylvania was able to get the property notch of land along the Lake Erie after it acquired the property from the Untied States government through purchase in other to have access to a freshwater port on Lake Erie
The Erie Triangle is a 780-square-kilometre expanse of land which has been subjected to several claims in colonial times in America.
This tract of land was later obtained by the U.S government and soled to The State of Pennsylvania.
Erie county became part of Pennsylvania after the state acquired them in 1792.
Learn more about the Erie Triangle at https://brainly.com/question/7197663