<span>The Ghana, Mali, and Songhai empires each grew wealthy and powerful through their trade of many products, but particularly gold. Because of the the empires were so heavily dependent on trade, various circumstances that diminished the empires' trading capacities, including the death of a leader or the strengthening of a rival empire, eventually led to their decline.</span>
Religious persecution, promise of new wealth and more land
The Eastern Front was much more terrible, for example, every German officer who would violate discipline in any way, one of the sentences was going to the Eastern Front. In addition, much more human casualties were on the Eastern Front, the way of fighting differed due to the nature of the relief. While the Western Front was mainly taking place in the territory of France and Belgium, although not just there with the trench warfare, the Eastern Front line spanned over a thousand miles, more precisely from the Baltic Sea in the north, to the Black Sea in the south, and extended to parts of the Central Europe, so that the trench warfare was unimaginable.
The answer is: D.
