Has poland been part of any big wars.(excluding ww2)
Nah, never, ever, most Poland ever did outside of WW2 was a scuffle with Slovakian border guards two years ago. It was in the papers and was by no means a small thing - one of the Polish border guys had to go to the doctor, his eye was bruised.
see i am doing a project on eurpean history
Sheesh, read a book.
Polish history is pretty much one bloody war after another with a relatively peaceful period in the XVIth century.
Pointers --> Polish/Soviet war 1919-1921, Battle of Vienna 1683, Battle of Beresteczko 1651, Battle of Grunwald 1410.