 The two kingdoms on the conquest and Iberian Peninsula competed with each other in opening of trade routes across the oceans.Spanish imperial conquest and colonization began with the Canary Islands in 1312 and 1402. which began the Castilian conquest of the Canary Islands, completed in 1495.In the 15th and 16th centuries, trade flourished across the Atlantic between Spain and the Americas and across the Pacific between East Asia and Mexico via the Philippines.