The purpose was to establish the goals that are necessary for a society of equality
The three G's, God, Glory, and Gold. They could spread their beliefs and society (God) to whomever they encountered, making them "less savage," they would gain glory just for conquering new lands and expanding their empires, and they could achieve riches by taking the lands they found for their own personal use and resource collection.
Scholar-officials, also known as Literati, Scholar-gentlemen, Scholar-bureaucrats or Scholar-gentry (Chinese: 士大夫; pinyin: shì dàfū) were civil servants appointed by the emperor of China to perform day-to-day governance from the Han dynasty to the end of the Qing dynasty in 1912, China's last imperial dynasty.
I'm no expert but considering the only other country capable of reaching it at the time was Portugal, who was focused on Africa, by the time Portugal arrived in Brazil Spain already dominated the carribean basin, England and France wouldnt arrive for a long time so it was pretty much just Spain, Spain and Portugal had also agreed how to split the findings in the new world