north-south divide
the increasing inequality in levels of development between the North and the South or between HICs and LICs
development gap
the difference in wealth between the developed world (north) and the developing world (south)
OPEC - Organisation of Petroleum Exporting Countries
the G7/G8
a group of the world’s wealthiest and most influential countries
the G10 or Paris Club
a group representing the wealthiest members of the International Monetary Fund