Let's go back, have to continue this:  >>/54236/
I wrote the context in which the US acquires new clients. There are contexts for maintenance too. Maybe we could call these "cases".
One important thing to remember is, that decision makers don't look at a client, classify into one from the possible cases, and apply policy instruments, but reports coming in about the clients and with the reports suggestions what should be done. There is a palette of policy instruments available, decision makers apply these - based on the suggestions or later evaluations, etc, and life goes on. The authors of the book examined the clients and the applied policy instruments and they created these cases as abstractions.

From routine maintenance point of view, we can see economically deprived and wealthy clients, the US offers them economic, military and political "help". The authors use a different word depending how well of a client is. In case of poor countries it's "assistance", but with rich countries it's "contributions". I don't think the difference is in the amount of help, but in case of poorer countries, the US has to act more dirty and in a more direct but more covert fashion. For example:
In Ecuador, for example, the CIA had on its payroll in the early 1960s the chief of the intelligence and personnel departments of the national police, the vice president of the Senate, one of the leading political journalists, leaders of several political parties, a cabinet minister, the manager of one of the largest banks, labor leaders, and an important figure in the federation of university students.
Or:
In some cases, heads of state or government themselves were recipients of regular payments from the CIA. [...] regular stipends went to the leaders of Jordan ($750,000 per year to the King), Cyprus, Kenya, Zaire, Guyana, South Vietnam, Taiwan, the Philippines, South Korea, Chile, Mexico, Venezuela, Thailand, and Panama.

picrel:
Anastasio Somoza, dictator of Nicaragua. His rise was a direct consequence of US military training programs. In some of the Caribbean countries, where the US sent her marines to intervene, they had to organize a new armed force after the military was defeated or disbanded. Nicaragua was the same. They created the National Guard, with Somoza in the helm, and he simply took the power over (with rigged election after he forced the prez to resign).