In 1823, a worker repairing the roof of Rome's Basilica of Saint Paul Outside the Walls accidentally started a fire that resulted in its almost total destruction. The church, built under Emperor Constantine in the 4th century, had retained its original character for nearly 1,500 years. Reconstruction work began almost immediately with the aim of recreating the original structure. The viceroy of Egypt contributed alabaster pillars to the rebuilding effort, while the Russian emperor sent what? Discuss (http://forum.thefreedictionary.com/postst17391_Fire-Ravages-Rome-s-Basilica-of-Saint-Paul-Outside-the-Walls--1823-.aspx)
Source: The Free Dictionary Encyclopedia.