Spain did.
Spanish conquistadors.
Silver.
Australian Zinc, Lead and Silver exports are worth $5 billion each year. Most of Australian silver is sent to Japan. Some is exported to the UK as lead bullion where it is extracted and refined.
In a word,gold, in two words gold and silver
It is the largest producer of silver in the world; so much that it can be exported to other countries for a handsome price.
The Spanish explorers of the 1500's encountered the Native American Aztec Empire and the Native American Inca Empire. Both empires were subjugated by the Spanish conquistadors. It was discovered that these empires valued gold and silver the same way Europeans did so tons of gold and silver were stolen and shipped back to Spain.
gold silver and copper
Some products included in the "Columbian exchange" were maize (corn), beans, avocado, tomato, several species of squash, the turkey bird and chili peppers.However, the items most exported from present-day Mexico into the Spanish Empire were silver and gold coins and ingots.
If this question means "Who exported gold and silver from the New World to Spain"? Then the answer is the Spanish conquistadors and Spanish explorers. Vast amounts of these precious metals were also precious to the advanced Native American peoples in Mexico and further south. The Aztecs, Mayans and Incas all valued gold & silver. What Spain did not steal from these civilizations were later mined, as the New World under Spain's dominion had vast mines of gold and silver.
During the so-called Columbian Exchange, Spaniards "exported" maize, turkey and tomato among other items to Europe. In return, they "imported" wheat, pigs, horses and many more items already known to Europeans bu unknown in the Americas. If you mean what resources the Spaniards extracted from Latin America, the two most important include gold and silver.
ancient egypt exported gold,silver,copper,papgrus & grain.