This is the twenty-first instalment of the Fortnightly Topic Challenge described here, with topics suggested and voted on here. This fortnight's topic is geography(suggested by David Starkey), and will span from the the 28th of November to the 11th of December. During this period, we will compile the list of questions with this tag and post it as an answer to this question.
In the meantime, please go and propose and vote on future challenges!
Everyone have fun, and happy puzzling!
Link to other Fortnightly Topic Challenges.