1. Succession Issues: Busbecq noted the challenges and conflicts surrounding the succession of Ottoman rulers. The practice of fratricide (killing of brothers) to secure the throne led to instability and internal strife.
2. Corruption and Mismanagement: He observed corruption and mismanagement within the Ottoman bureaucracy and government, which he believed would weaken the empire over time.
3. Financial Problems: Busbecq highlighted the financial difficulties faced by the Ottomans, including issues with tax collection and fiscal policies. This economic strain would hinder the empire's ability to maintain its power.
4. Militarism and Constant Warfare: The Ottomans were engaged in almost constant warfare during this period. Busbecq saw this as a drain on resources and manpower, ultimately making the empire vulnerable.
5. Religious Diversity: The Ottoman Empire was diverse in terms of religions and cultures within its territories. Busbecq pointed out that managing this diversity was a challenge and that religious tensions could contribute to instability.
6. External Threats: He also noted the presence of external threats, including the expanding Habsburg Empire, which could pose challenges to the Ottomans.