The second one, Bolsheviks and anti-tsarists
Answer:
In 285 AD, Emperor Diocletian decided that the Roman Empire was too big to manage. He divided the Empire into two parts, the Eastern Roman Empire and the Western Roman Empire. The Western Empire was ruled by Rome, the Eastern Empire was ruled by Constantinople.
b.North and the Midwest
The North was becoming industrialized and the Midwest had both food production and natural resources needed for industrialization. The creation of canals and roads helped transportation between the two areas to aid the economic development of both areas.
The American System was the economic plan of Henry Clay to move the US to a more industrialized country especially in the North. The War of 1812 made it clear to some Americans that the US was still economically dependent on Great Britain. The American System was created with the goal to make the US more independent and self-sufficient as a country.