Please capitalize where necessary: iran has been the home of a culture which has been influential but not mainstream in the history of world civilization.
A: Iran has been the home of a culture which has been influential but not mainstream in the history of world civilization.

Please capitalize where necessary: the 40 lithographs are accompanied by a trilingual text, which is a different one than the one accompanying chovin's, beck's and stuckert / schneider's publications.
A: The 40 lithographs are accompanied by a trilingual text, which is a different one than the one accompanying Chovin's, Beck's and Stuckert / Schneider's publications.

Please capitalize where necessary: for buyers of traditional and customised packages , today’s proposal will bring:
A: For buyers of traditional and customised packages , today’s proposal will bring:

Please capitalize where necessary: previously a workers’ restaurant and a printing house, overgaden was turned into an exhibition space on the initiative of a fashion designer and is today an important platform for the experimental arts as well as a forum for discussion and debate.
A:
Previously a workers’ restaurant and a printing house, Overgaden was turned into an exhibition space on the initiative of a fashion designer and is today an important platform for the experimental arts as well as a forum for discussion and debate.