Below you can find the This city just south of the equator is the oldest of all south american capitals Jeopardy Words Answer. The answer to This city just south of the equator is the oldest of all south american capitals has 5 letters. This clue belongs to the South american capitals category and is part of Jeopardy Word Level 2108. If you scroll near the bottom you will find other clues and answers part of level 2108