Oligarchy is a limited type of government
A historian would first look at the reliability of a source - when it was published and what was happening at the time (context), who wrote it and their qualifications, any bias the author may hold, whether author sources corroborate the source, whether the author has used references, whether the source provides evidence, who the source is representative of and whether the source provides a balanced perspective
Yes because they all tried to solve issues with war, economics, and society. The "New Deal" from FDR, the "New Frontier" by JFK, and the "Great Society" by LBJ.
