Answer:
D. They made money at the expense of their workers.
Explanation:
The definition of "robber barons" is an individual that has become rich through ruthless and cruel business tactics.
An abundance of food enabled people to pursue jobs outside of agriculture is to spend more money on other goods and services like entertainment, leisure etc.
Explanation:
An abundance of food enabled people physically and mentally as they received much amount of nutrition and calorie which enhance their health index. So, they want to spend money in other recreational activities like leisure, tourism, entertainment etc.
Abundance of food also increases people's economic growth. In this condition they do not have any need to struggle for food or excess savings for tough time. So, adequate production fulfill one's expectation and broadens the way of putting more emphasis on goods and other services.
When the two civilizations first met there is was no written Japanese language so when the countries met the Japanese adopted the Chinese script to that communication between the empires was possible
Free of the world
or
leader of the world
I would go with C.
Hope that this helps you..