Answer:
United States. In U.S. politics, a third party is a political party other than the Democrats or Republicans, such as the Libertarians and Greens. The term "minor party" is also used in a similar manner.
The answer is France and Britain
It was right in the middle of the Bosporus, Black Sea and the Mediterranean Sea. So, all trade between North Africa, Asia and Europe, had to pass through the capital (Constantinople), causing the Byzantine Empire to become very wealthy due to taxes they charged between the trading.