Through multiple revolutions people have adapted to and affected their environments. As civilizations settled, new advances in agriculture and tools were made to allow for a less-nomadic society. Through advances such as iron tools and food stock, civilizations settled creating the basis for large empires to come later. Also through the innovation of weapons and armor, empires were able to better control and defend larger territory allowing for exponential expansion. Finally, with new advances made by different civilizations, trade increased as demand for new products from other empires grew.
https://socratic.org/questions/how-were-the-west-african-kingdoms-involved-in-the-slave-trade
With the development of the trans-Saharan slave trade and the economies of gold in the western Sahel, a number of the major states became organized around the slave trade, including the Ghana Empire, the Mali Empire, and Songhai Empire. However, other communities in West Africa largely resisted the slave trade.
The transatlantic slave trade began during the 15th century when Portugal, and subsequently other European kingdoms, were finally able to expand overseas and reach Africa. The Portuguese first began to kidnap people from the west coast of Africa and to take those they enslaved back to Europe
Media is a very powerful tool that can be used for either good or bad. The ones who know how to effectively use media are very powerful. Stalin knew this and effectively used it during his reign. The media did celebrate the accomplishments of Stalin and the Communist Party while at the same time attacked anyone who dared say anything. Likewise the material that showed the government in the negative light was not allowed. Thus he strengthened his rule through the clever use of media and censorship.
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