How well do you know the two-letter US state postal abbreviations? For the fifteen states below, select the correct code from the four options...

Over the course of history many cities and countries have changed their names to reflect newly acquired independence or a shift in borders. Test your knowledge of former place names with these multiple choice questions...

Covering a fifth of the world's land area, Africa is our planet's second largest continent. Test your knowledge of its countries and its people with these multiple choice questions.

The world's largest country, whose capital is reportedly home to more billionaires per capita than anywhere else on Earth, how much do you know about Russia?