I'm sorry, but the question you provided seems to be a mix of different topics and is not clear. It mentions the 'Congo Free State', Balkan wars, Italy, Germany, nationalism, and the Trans-Atlantic Slave trade without a clear connection or context.
If you could provide more specific information or ask a focused question, I would be more than happy to help you understand the topic or concept you're interested in. Feel free to ask any question related to history, geography, politics, or any other subject you need help with.
