Zheng He's voyages: These were large-scale expeditions led by Chinese explorer Zheng He during the Ming Dynasty (not the Song Dynasty) in the early 15th century. They showcased China's maritime prowess.
Caravel ships: These were small, highly maneuverable sailing vessels developed by European sailors during the Age of Exploration. They played a crucial role in expanding maritime exploration.
Naval blockade: An act of using naval forces to prevent supplies or reinforcements from reaching or leaving a particular area during times of conflict.