Constantine's main contribution to imperial Christian art was in the form of grand monumental architecture. In Rome, where he spent only a few months of his life, he had constructed the first Vatican basilica over the tomb of St. Peter, and the church of what is now known as St. John Lateran, as well as the largest Roman triumphal arch ever built. In the rest of the empire, he built imposing basilicas as far apart as the Church of the Holy Apostles in Constantinople and that of Trier in Germany.
Andy Warhol's pop art paintings and screen prints, made in the 70's and 80's before his untimely death; throughout his life he was a renowned illustrator and created vast collections of images which have become iconic images of the era, including many works on "Campbell's Soup Cans" and Marilyn Diptychs" where he explored the ideas of commodification, consumerism, and celebrity culture through the lens of mass-production.
It is The art of producing decorative handwriting or lettering with a pen or brush, it was used on many occasions to write important letters and sayings.