The stats on this game are interesting.
Highest correct %:
United States
Canada
Russia
Mexico
Brazil
China
France
United Kingdom
Australia
Spain
Lowest correct %:
Nauru
Kiribati
São Tomé and Príncipe
Tuvalu
Palau
Comoros
Vanuatu
Timor-Leste
Antigua and Barbuda
Burkina Faso
Most remembered by continent:
Africa: Egypt
Asia: Russia/China (depending on whether or not you consider Russia to be a part of Asia, I guess)
Oceania: Australia
Europe: France/UK (tie)
N. America: United States
S. America: Brazil
Least remembered by continent:
Africa: São Tomé and Príncipe
Asia: Brunei
Oceania: Nauru/Kiribati (tie)
Europe: Kosovo
N. America: St. Vincent-Grenadines
S. America: Guyana