I think 1991 it was the fall of soviet union
The ocean floor or seabed can be divided into three major regions: the continental margins, abyssal plains, and mid-ocean ridges.
Colonialism hindered a LEDCs level of development. A colony helped supply food and minerals to countries like Britain and France. ... In many cases gold, diamonds and other valuable resources were taken back to the home countries leaving the colony with little material wealth.
In the last decade, South Korea has focused on: high-tech industries