Naval expeditions refer to organized voyages undertaken by ships for specific military, exploratory, or trade purposes. During the period from 1200-1450 in South and Southeast Asia, these expeditions played a crucial role in establishing maritime dominance, facilitating trade routes, and connecting different cultures across vast oceans. They were essential for the expansion of empires, the spread of religions, and the movement of goods and ideas, shaping the economic and political landscape of the region.