Me with these 2 questions, keep it in your own words 1. what are major imports 2. what are major exports

Major imports are the main things a country buys from other countries.

Major exports are the main things that a country sells off to other places in the world

Major imports are the goods that a country buys from another country the most, like American purchases Colombian coffee beans in massive numbers for example. 
Major exports are the goods that a country or nation primarily sells to other countries. For example, the United states major export is automobiles and parts, that we send to other countries.

It is an important part of history because it documents the South African government's establishment of apartheid

Explanation:

It helps today because it puts out some type of order.