Topic: Tell me a short, interesting fact about

One fascinating fact about the Roman Empire is that it is often compared to an onion due to the layers of rulers it had. The first layer, the Roman Kingdom, was ruled by seven kings from 753 BC to 509 BC. The second layer, the Roman Republic, spanned from 509 BC to 27 BC. The third layer, the Roman Empire, began in 27 BC and ended in 476 AD, when the last Roman Emperor, Romulus Augustus, was deposed by the Germanic king Odoacer. Each of these layers had distinct political structures and cultural characteristics.