you're citing wikipedia and yet you didn't even read the article you linked: "the uprising had a significant effect on the decisions in versailles that granted poland not only the area won by the insurrectionists but also major cities with a significant german population like bydgoszcz (bromberg), leszno (lissa) and rawicz (rawitsch), as well as the lands of the polish corridor...." it vindicates everything i have said right there. the lands were granted to poland by the treaty along with a bunch of other territory including the polish corridor. couldn't have said it better myself.
United States