Which of the following contributed to the Ottoman Empire's territorial expansion?

The correct answer is Its strong military was able to defeat other nations

The military strategies used by Otman I transformed the tribes into an imperial dynasty and allowed the spread of the Muslim religion over the conquered territories. Nevertheless, one of the main factors that guaranteed the territorial expansion of the Ottoman Empire is the tolerance of the traditions and religion of the conquered peoples.

The army gained successive victories against the Byzantines in 1300.