Spain's wealth acquired from the New World was considered to be a mixed blessing due to the speed at which the wealth was acquired. Spain gained its wealth so quickly, the result was massive inflation for ordinary Spaniards.
American wealth enriched Spain because they were trading together. The businesses in America were able to produce useful things for Spain due to their resources.
Spain established the colony to add to its own wealth and power and to convert the local people to Christianity.
Spain wanted to protect its colony in Mexico from other Europeans
Spain sought to expand it's empire to compete with other European countries such as Great Britain. the main objectives for Spain was to spread Catholicism and search for Gold to increase wealth. Many native peoples died over Spain's conquest of Latin America.
Spain got wealth, empire and world domination.
increase the wealth of Spain
1536
Spain
Spain established colonies for wealth and to convert people to christanity.
religious freedom and wealth
In all its history, Spain has never taken over Austraila. Perhaps you meant South America and Central America? If so, the basic answer is the prospect of wealth, chiefly gold and silver. The wealth did not eventually benefit Spain.