@Baldimo,
The USA is only the world's biggest giver because it is rich. In terms of generosity and altruism, the USA is the most stingy and self-interested giver in the developed world:
[Americans] are regularly told by politicians and the media, that America is the world's most generous nation. This is one of the most conventional pieces of 'knowledgeable ignorance'. According to the OECD, the Organisation for Economic Cooperation and Development, the US gave between $6 and $15 billion in foreign aid in the period between 1995 and 1999. In absolute terms, Japan gives more than the US, between $9 and $15 billion in the same period. But the absolute figures are less significant than the proportion of gross domestic product (GDP, or national wealth) that a country devotes to foreign aid. On that league table, the US ranks twenty-second of the 22 most developed nations. As former President Jimmy Carter commented: 'We are the stingiest nation of all'. Denmark is top of the table, giving 1.01% of GDP, while the US manages just 0.1%. The United Nations has long established the target of 0.7% GDP for development assistance, although only four countries actually achieve this: Denmark, 1.01%; Norway, 0.91%; the Netherlands, 0.79%; Sweden, 0.7%. Apart from being the least generous nation, the US is highly selective in who receives its aid. Over 50% of its aid budget is spent on middle-income countries in the Middle East, with Israel being the recipient of the largest single share.”
Not only that, but according to one source cited by Sarder & Davies, 80% of that aid itself actually goes to American companies in those foreign countries.
% of USA aid 1988-1989
Israel 12.5
Egypt 9.5
Pakistan 3.9
El Salvador 3.3
India 1.9
Philippines 1.8
“US aid, which acquired an increasingly military flavour during the Regan years, is now concentrated on a relatively small number of countries of special political importance.”
"Introduction to International Politics" by Heater & Berridge (1992)3
According to Heater & Berridge, Israel has been receiving 12/13% of all American charitable foreign aid since 1979, the chart shows numbers from 1988-1989.