In which kind of economic system does the government control the businesses that affect most citizens, such as railroads and electrical power?: (
a.
populist
b.
unionist
c.
free-market
d.
socialist

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.