Possible Clues:

• Teacher going back to university gets a piggyback in the country
• Year a university teacher backed champions twice
• Elevated teacher uneasy when losing bearings in the country
• The country guru returned with you by the sound of it, yes?
• S American country
• Country with the southernmost capital city in the Americas
• Montevideo is the capital of this South American country
• Argentina neighbor
• Montevideo is there
• Brazil's neighbor