Krishnadevaraya, the emperor of the Vijayanagara Empire, maintained friendly relations with the Portuguese. The Portuguese were one of the European powers that established trade and diplomatic ties with India during the medieval period. They arrived in India in the late 15th century and eventually set up trading posts along the western coastline.

While it is true that Krishnadevaraya had interactions with other European powers like the French, British, and Dutch, the main emphasis of his relations seems to have been with the Portuguese. The Portuguese and the Vijayanagara Empire had trade agreements and alliances that benefited both parties. This helped Krishnadevaraya strengthen his position as a ruler and also brought economic prosperity to his kingdom.

Alert - correct answer should be "3. Portuguese".