what country is the article about?
Poland
what is it's official name?
The Republic of Poland
what is the earliest date  in the article?
966
what happened then?
Polish state established
by who?
Mieszko I
what religion was he?
Christian
when did the monarchy come into being?
1025
what was signed in 1569?
Union of Lublin
what did it form?
Polish–Lithuanian Commonwealth
was that big?
Yes