What key event occurred during the year 1780? What impact did this have on the Revolutionary war?

Bull files a suit against clay in a state court over payment due on a short-term lease of grazing land. the case proceeds to trial, after which the court renders a verdict. the case is appealed to an appellate court. after its review of bull v. clay, the appellate court upholds the lower court’s verdict. the appellate court has:

Who established the peoples republic of china in 1949

Who is the executive branch checking when the president calls a special session of congress