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History quiz

NATO members: sort them by the year they joined

Thirty two members and eleven joining years. A country appears and you click the year it joined.

Format
Sort into groups
Items
32 to sort
Limit
3:12
Level
Hard
Checked
2026.10.03
Items
32
Groups
11
Time limit
3:12
A miss
2 tries, then the answer is shown
  • Each member appears in turn. Click its joined, or press its number.
  • The groups never move, so the number keys are quick.
  • Skip (0) sends a prompt to the back of the queue.
  • Pause whenever you like (Esc). The board hides while the clock is stopped.

Click the year each country joined NATO. The groups appear when you start.

About this quiz

A sorting round built on the list behind Ribbia's NATO members by year joined quiz: 32 entries in 11 groups. A miss never passes in silence: the right group is shown before the next entry.

  • Twelve countries founded the alliance in 1949.
  • Seven countries joined together in 2004.

Sources

  1. [1]NATO. NATO member countries.

Note on the data. Entries and groups are read from that quiz, row for row. Founding members and the year of each accession follow NATO's own page on its member countries, checked on 3 October 2026. Country names follow NATO usage (Türkiye, Czechia, North Macedonia), with older and everyday names accepted.

Last checked October 3, 2026

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