What geographic feature most likely hindered the byzantines from expanding from north of italy

Which political organization lobbied government officials to control the immigrant population

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or false ?

In which supreme court case did the court rely on the concept of implied powers to make its ruling? a) gibson v. ogden b) mcculloch v. maryland c) dartmouth college v. woodward d marbury v. madison