Geotrivia - October 2021: multinational rivers

Hi everyone,

welcome to October 2021 #fridaygeotrivia!

As is our tradition, on the final Friday of month on twitter under the hashtag #fridaygeotrivia we run a geotrivia contest. Afterwards we post the answers here on the blog. See below for how to play.

The October 2021 geotrivia question:

Name rivers that flow through or form the border of at least five countries

One important clarification - tributaries and drainage basins don’t count. It has to be the river itself.

Prizes

#fridaygeotrivia is a game with two prizes:

the sheer joy of geographic knowledge and pedantry.
the bragging rights of getting the answer first.

The #fridaygeotrivia twitter thread:

Time for #fridaygeotrivia 🌎⁉️ This month's question is about rivers: name rivers that flow through or form the border of five or more countries. For full credit you need the name of the river, the name and emoji flags of the countries, and the hashtag. Reminder of the rules: pic.twitter.com/3QZat2cdLC
— OpenCage Geocoder 👉🌍 (@OpenCage) October 29, 2021

The winner

Once again we have to congratulate Dave McLaughlin, who also won in September and back in July. Well done, Dave. The rest of you need to raise your game.

This month’s geotrivia answer:

The Danube: DE, AT, SK, HU, HR, RS, RO, BG, MD, UA
The Drava: IT, AT, SI, HR, HU
The Mekong: CN, MM, LA, TH, KH, VN
The Niger: GN, ML, NE, BJ, NG
The Rhine: CH, LI, AT, DE, FR, NL
The Tisza: UA, RO, HU, SK, RS
The Zambezi: AO, NA, BW, ZA, ZW, MZ

How to play

Anyone can join in, you just need a twitter account. Please note - these edition of the game was played long ago - these days we play on Mastodon, not twitter.

Reply to the question thread on twitter (embedded below) using the hashtag #fridaygeotrivia in your answer.
Only one answer per tweet
While you can use a map, please do NOT use the internet to just search for an answer. That is cheating and will lead to seriously bad geokarma.
To get full points for an answer it is good form not just to name the relevant country but (if possible) to include the emoji flags of the country.

Some people have complained the format is a bit chaotic and hard to follow. Yes, the mad chaos is part of the fun. Embrace it. The goal is just to have fun and learn. We win by playing

Happy geocoding,