The use of vertical integration to create momopolies
Depends on Emperor, but mainly was the army. The army conquered many lands such as the land now called England. They even got as fair to Asia, before being pushed back. As well when conquering those lands, they gained Servus or slaves. That could then go to be a Tiro, or Auxilia. With all of that brought power and wealth. As well a lasting image of how terrifying the empire was.
Answer:
However its widespread and indiscriminate use in stifling genuine political discourse made it deeply unpopular, and became increasingly reviled within India. ... The act was re-enacted during World War II as Defence of India act 1939.
Because cars are more common and roads are cheeper economically for society
They had a very good army, and also had funds to recruit more soilders even foreign soilders.
