What is the most commonly spoken language in the world not named after a country?

What country lies directly north of Vietnam?

I'll give you the old name for a place, you give the new name. a. Rhodesia? b. Cathay? c. Abyssinia?

What is the modern name of the city formerly known as Leningrad?

Which plant, common around Christmas time, contains poisonous berries which can cause acute stomach irritation if eaten?

Which tiny country is sandwiched between Switzerland and Austria?

Name the capital cities of each of these islands: a. Cyprus b. Dominican Republic c. Falkland Islands