Final answer:
The 16th-century colonial patterns of Portugal and Spain were shaped by their geographic locations, historical backgrounds, and strategic approaches, with the Treaty of Tordesillas playing a significant role in their differing practices.
Step-by-step explanation:
The different patterns adopted by Portuguese and Spanish maritime empires during the 16th century were influenced by various factors, including geography, trade, strategic interests, and historical context. Portugal, with its maritime tradition and strategic location, established trading ports in critical areas such as West Africa and India.
Spain, on the other hand, explored vast new lands post-Columbus's voyage and controlled its colonies rigidly, transferring treasures back to the mother country.