Updated 05 May 2004, 17.35
Ten new countries joined the European Union on 1 May.
Cyprus, the Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia and Slovenia now join the 15 old members.
But do you care about the enlargement of the EU?
Do you think it affects you at all? And if it does, what does it mean to you?
Email and tell us your view.
Unfortunately this topic is now closed but there are Comments pages on other subjects on the main Chat index.
I do care about the EU because it's what England is part of.
Thomas, 10, Gatley
I don't think that they should enlarge the EU because people like it the way it is.
Mark, 11, Edinburgh
The enlargement of the EU is a good thing for the countries joining who have unfair laws and have to agree to the new EU laws.
Anthony, 14, Hertfordshire
I don't mind as long as it does not effect my everyday life, many people would complain if it did.
Adam, 13, Southam
I've known about it for about 2 years. I think it's good for the new countries, but I hope the EU leaders remember to keep their countries' customs and culture intact.
Claire, 15, Ireland
I think it was done to create a unity within the countries but seeing as different countries have different amounts of money and different views on legal rights, it seems fairly pointless.
Danielle, 14, Reading
I think foreign languages will be more important, and more people will be able to speak them. I think that would be great!! I hope they will become very close and help each other out loads.
Hannan, 13, Newcastle
It doesn't affect me and I don't care. But people like Brid from Dublin, Katie from Stoke-on-trent, Elisabet from Estonia, Alex from Estonia and Danielle from Stoke-on-Trent think it will be good. Brid thinks that it will benefit people which is good and Danielle thinks the same, so all I can say is go for it!
Sumaiyah, 12, Leicester
If not for seeing about it on NR, and one thing in the paper, I honestly don't think I'd know! It hasn't affected me at all. I'm sure there'll be something about it in assembly on Monday, then we'll all forget about it.
Louise, 13, Banstead
It doesn't affect me, we don't really learn about it in school so I don't really care to be honest
Karen, 13, Sutton
I think it is good because we will have a relationship with more countries
Rosie, 9, Reading
The EU has done more damage to Newcastle than it has done to help. We used to be able to fish and make a living out of it, and now they're stopping that. The Spanish fisherman are taking all our fish and over fishing and thus endangering species, but the EU pretends that it isn't happening. I want to be ruled by a government we elected, not by a group of foreigners who ignore the laws that they make.
Jane, 13, Newcastle
I think it's a good idea but I think we should be careful that they don't damage Europe economically.
Greg, 15, London
I think that the enlargement of the EU will bring the countries closer together. I think it will help keep peace between many countries as well.
Bethan, 15, Caerphilly
It affects me because I live in Estonia. The EU and the enlargement is a big deal for us, it opens plenty of new opportunities.
Elisabet, 13, Estonia
My country just joined - I'm glad we've joined. Better rules!!
Alex, 12, Estonia
I think it's really great that the EU is getting bigger. It will help countries get along with one another better, being joined together as one.
Juliette, 13, Cardiff
I am not quite sure if enlarging the EU is a good idea. Countries should have certain standards before joining, like a strong economy.
Alyssa, 13, Surrey
The EU doesn't really have so much of an affect on day to day lives, at least not to me. But I hope that expanding the EU will mean that we will be able to learn a lot more about the Eastern and Central European countries like Latvia, because they are sure to have a rich history and culture. And hopefully the EU will include all of Europe...
Srinjoy, 14, Abingdon
Ireland need this trade from the new EU countries. We are learning all about it in school. Britain also needs the same thing!
Cate, 12, Belfast
The EU affects all those in it, in many ways, from whether we can move to another country in it, to the equality we all get. The enlargement of the EU means that millions more people can get all the rights the original 15 countries have.
Hazel, 12, Cambridge
I hope this means that the less off countries can be helped by the more well off ones such as England. I think that equality is very important. I also feel that this will reduce wars and help the leaders of each country to think twice before going to war with others.
Katie, 12, Stoke-on-Trent
I think that the EU being larger will make it more difficult to get a majority of agreement within the 25 countries and there will actually be more arguing than before!
Sophie, 15, Birmingham
Well because I need to learn all countries in the EU for my exams, yes I do care!! Other than that, I think that we should be more involved with other European countries, because it really does help in more ways than one.
Fatemeh, 13, Birmingham
This is brilliant! Enlarging the EU is exactly what Europe needs. I have been to the Czech Republic and was surprised to see how less well off they are. I feel that this is going to help them a lot.
Danielle, 12, Stoke-on-Trent
The new countries will create a larger drain on our economy than the EU already does! We can still hold close relationships with other EU countries but honestly if you heard some of the stats about the EU, like the fact that our EU membership has cost us more than 11 BILLION pounds so far, plus all of the other costs that their restrictions put on us and the debts of other countries.
Jenny, 15, Repton
I do care because most of these countries are in the same position as Ireland were once. EU funds will help these countries become more prosperous and benefit them hugely.
Brid, 15, Dublin
I don't really care about the EU, and I also think it doesn't affect me at all. But I hope that the UK gets more friends and there will be no more wars
Nikki, 12, Dumfries
I don't really care because I'm not part of the ten new countries. But if I was I would care a lot.
Leona, 10 (nearly 11), MacDuff, Scotland
I think it will help the UK and we'll be able to travel to those countries easier.
Sophie, 11, Gosport
I didn't even know the EU was thinking about enlarging! When I read about it on Newsround I was just like "What?!" Why don't people tell me these things?!
Kate, 13, Aylesbury
Not really. I don't understand properly what the EU does or how it helps to be part of it.
Tesni, 14, Bath
Emma, 9, Oxfordshire
I hope this means that the UK will have a better relationship with the new member countries in the future.
Tom, 13, Bristol