<span>the massive amounts of people over the age of 65 or older
</span>
There has always been slavery inside Africa.
(Sadly slavery is still in Africa today.)
Europeans sold goods that the kingdoms wanted.
The kingdoms kept pushing further and further into the interior.
This created a continuous cycle.
Whites were sold into slavery in Africa also.
(They were captured from barbery pirates in North Africa.)
In the former soviet union, the main basis for ranking higher in the stratification system was <span>membership in the Communist party
In the former Soviet Union, the organization of the Communist Party was mainly based on the </span><span>principles of democratic centralism.
</span>This party was governed by the <span>the </span>Party<span> Congress.</span>
They disliked it with a passion and openly opposed it, often being in wars with western forces. From China who was in war with Britain over colonization, to Korea, Vietnam, Cambodia, Laos, and many others.