A new volcanic arc forms at the site of the easternmost transform, and many complications develop in SE Asia (Philippines, etc.) because of transforms turning into arcs, and various subduction-flips as thick (plateau-type) ocean crust refuses to subduct. A new subduction zone develops north of Australia.
Some of the causes of the European voyages of exploration were: 1  Alternate trade routes: Europe was dependent on Middle East countries for the import of spices and was looking for alternate trade routes to Asia and Africa to obtain spices (ginger, nutmeg, clove, cinnamon, etc.) and luxury goods (silk, gold, ivory, etc.) cheaply.
make voyages of discovery possible. Motives for Exploration For early explorers, one. of the main motives for exploration was the. desire to find new trade routes to Asia. By the. 1400s, merchants and crusaders had brought. many goods to Europe from Africa, the Middle. East, and Asia. Demand for these goods. increased the desire for trade.