Why did portuguese ships travel to Africa's east coast?

Portuguese ships traveled to Africa's east coast primarily to establish trade routes and acquire valuable commodities, such as gold, ivory, and spices. The expeditions were part of the broader Age of Exploration, where Portugal sought to expand its influence and secure maritime trade advantages. Additionally, the Portuguese aimed to spread Christianity and counter Muslim dominance in the region. These voyages laid the groundwork for future colonial endeavors and the establishment of trading posts along the coast.