Answer: Following the ratification of the Treaty of Versailles, firm restrictions were placed on the German military, most notably, the entire army was restricted to just 100,000 men, while the navy was reduced to just 15,000 men.
Explanation: Hope this helps :)
The 1920's saw a period of rapid industrialisation, which made the decade to be correctly called the Roaring twenties. However, it is only the industrialists who benefited from the boom, with the majority of the working population conditions remaining poor. This was a fragile situation that led to the great depression as few money was circulating in the larger population. This has led to some conspiracy theorists attributing the blame of the great depression to the industrialists and bankers.
I believe the answer is b because there were often wars between African clans and the best way to get rid of the prisoners and get things they needed at the same time was to trade them.