# This riddle could be extremely useful

I was created long ago, more than fifty years in fact.
Back then there were just six in me, held together by a pact.

Next I did increase by three, but one of them will leave.
Then one more came in alone, and I did almost grieve.

My next addition was a pair, but they were both close by.
Then did come another three, and I extended high.

One summer warm some years ago, I grew and grew in size.
The largest change I'd ever seen - so many new allies.

Two more and then a final one, my history is complete.
Identify me and you'll get - a checkmark for a treat.

Are you

The European Union?

I was created long ago, more than fifty years in fact.
Back then there were just six in me, held together by a pact.


Created in 1957 between Belgium, France, Italy, Luxembourg, the Netherlands and West Germany, via the Treaty of Rome

Next I did increase by three, but one of them will leave.
Then one more came in alone, and I did almost grieve.


Denmark, Ireland, and the U.K joined, the U.K will leave. (Brexit) Greece then joined, and is the EU economy currently struggling most. (grieving?)

My next addition was a pair, but they were both close by.
Then did come another three, and I extended high.


Portugal and Spain joined next, Germany was reunified(not mentioned) and then Austria, Sweden, and Finland joined. This extended the EU to the north (high)

One summer warm some years ago, I grew and grew in size.
The largest change I'd ever seen - so many new allies.


To quote Wikipedia "In 2004, the EU saw its biggest enlargement to date when Cyprus, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia joined the Union."

Two more and then a final one, my history is complete.
Identify me and you'll get - a checkmark for a treat.


Romania and Bulgaria, followed by Croatia

• Identify me and you'll get - a checkmark for a treat. --> 'czech mark'??? – Avik Mohan Oct 15 '16 at 5:04
• @AvikMohan Unintentional, but clever! – Rand al'Thor Oct 20 '16 at 13:49
• "Almost grieve" is meant to be a "change one letter" clue: Greece -> Greeve -> Grieve. – Rand al'Thor Oct 20 '16 at 13:50
• Also, did you spot the clue in the title? – Rand al'Thor Oct 22 '16 at 19:33