Amazon Rainforest: The world's largest tropical rainforest, often referred as 'lungs of Earth', located mostly within Brazil.
Portuguese Empire: An era when Portugal established colonies around world including Brazil during Age of Discovery between 15th and 18th century.
Treaty of Tordesillas: Signed in late 15th century between Spain and Portugal dividing newly discovered lands outside Europe along meridian line; this gave Portugal claim over what is now Brazil.