What is one reason that the middle ages are somthing referred to as the "dark ages

The ancient greek city-state of sparta was run as an oligarchy , meaning

Which of the following allowed the government to stop a foreigner from becoming a citizen, presidential power to throw anyone he wanted out of the u. s. and that it was a crime to criticize the government? the alien and sedition act the xyz affair the 12th amendment marbury v madison

In what way did expansion and global trade during the 15th to 18th centuries affect the economies of european countries