The Mycenaes were formed by multiple human groups that lived on the Greek mainland around 1600 BC to 1100 BC. Their main economic activity was focused on trading goods from Asia and Egypt on the Mediterranean and Aegean sea. On the other hand, Troy was located in the actual Turkey and had a privileged site for controlling the Aegean sea and for exchanging products from the far East. The Mycenaeans wanted to obtain a monopoly in the Aegean sea and that's why they joined in the siege of Troy. Thus, the right answer is C. Trade competition between Mycenae and Troy. Sadly, for the Mycenaes, their control didn't last for very long and their Empire started to collapse after invading Troy.
