trouble from VOA, wait for your answer 0219

American History Series: “For a while, it seemed the other delegates would never arrive. But then they started coming one or two at a time. The delegates agreed to start the convention as soon as seven states were represented.”

Question: Here I don't know this world"represented"  I couldn't find a proper and exact meaning  for the above last sentence in all dictionaries I could find.

I'm dying for your help, thanks so much. 

Please see below the definitions from the Cambridge Online Dictionary. If you still do not understand, please ask.

represent (ACT FOR)    verb [T]
1 to speak, act or be present officially for another person or people:
They chose a famous barrister to represent them in court.
Union officials representing the teachers met the government today.
Women were well/poorly represented at the conference (= there were many/few present).

2 to be the Member of Parliament, or of Congress, etc. for a particular area:
Mr Smythe represents Barnet.

3 FORMAL to express or complain about something, to a person in authority:
We represented our grievances/demands to the boss.

representation    noun [U]
Can he afford legal representation?

representative   noun©
1 someone who speaks or does something officially for another person or group of people:
The firm has two representatives in every European city.

2 US someone who has been elected to the US House of Representatives

representative   adjective
a representative system of government

i  cant say more 

tiffintime   did a great job

thxxxxx

c u soon

thanks you two again.

Mr.abu,  you also did a great job. thank you all the same.

Mr.tif, you gave me a great website, now I can look up some words completely on the Cambridge Online Dictionary.

you always help me  with my English. I just cannot thank you enough.