Colonialism and More
The processes by which some nations enriched themselves via social, political, cultural and economic exploitation over other, not so powerfull nation(s). 
A form of modern colonialism, which entails more subtle and indirect forms of social, political, economic and cultural exploitation by one nation over another. See Modernization and Dependency theory.
Entails not only practices associated with colonialism and or neocolonialism BUT includes the building of an empire, which includes territorial conquests and domination of other nations.
Empire or Humanity
A social system in which the "rule" is not by political, economic or physical force alone, BUT via the manufacturing of consent and conformity of the general public. This assumes that when controlling the very ideas, including the "common sense" assumptions of a society, conformity is likely to emerge among its members. For example, "Man is basically aggressive." "Man is inherently selfish." "It is only natural to want more."
In this context the term "exploitation" means the act of using something in an unjust and cruel manner in order to benefit one's own (or one's group or society's) situation.
The selfish or unfair use of someone, or something for one's own advantage.
Rate of exploitation: the difference in what producers (workers), are paid for their labor and what the capitalists (owners), earns for the product via the market. This term is also used to refer to a process by which people are treated as if they were objects and or commodities with little if any consideration for their well-being or human rights.
"The history of Kenya and Vietnam taught us that the suppression of a colonized people can only be sustained through barbarism." (Gary Younge, The Guardian, 2006)
Colonialism and Africa
U.S. Imperialism in the world