The longest mountain range in the world is the Andes.

About 50% of marriages end in divorce in many developed countries.

Japanese has three separate writing systems used simultaneously — hiragana, katakana, and kanji.

The Black Death significantly reduced Europe’s population in the 14th century.

The lyrebird of Australia can mimic almost any sound — including chainsaws, camera shutters, and car alarms.

The Andes are one of the longest mountain ranges in the world.

The Aztec capital Tenochtitlan had a population of around 200,000 in the early 16th century, larger than most European cities.

The Roman navy played a key role in Mediterranean dominance.

Norway has a town called Å.