| The Amazon is wider than the Rio de la Plata at their widest points by 10 miles (150 for Amazon to the Plata's 140). For cities, you need to specify city proper vs metro area. When you say 'lake', can you specify volume, area or depth too. Caspian wins on the first 2 but Baikal wins on the third. Also, you should specify whether you're including brackish water as strictly speaking a sea isn't a lake. Also, please accept 'caspian' as well as 'caspian sea'. I've definitely seen several rankings that put New York ahead of Mexico City, so you specify how you're ranking that. For mountain range, you need to specify that it's length you're looking at, and also that you mean on dry land, as there are longer submarine mountains. Hope that helps! |