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1. Fought the germanic tribes along the Rhine for the first two years of his reign. This campaign, often overlooked, avenged previous defeats and seems to have tamed the barbarians in that area for well over a century.

2. Conquered the Dacians in 106 CE, and annexed Dacia including its gold mines. This was the last great conquest of the Roman Empire.

2. Made Armenia a Roman province. Trajan also temporarily overran Mesopotamia, capturing the Parthian capital Ctesiphon and then advanced all the way to the head of the Persian Gulf. He thus brought the Roman Empire to its geographical apogee (albeit briefly).

4. Did much to improve the Empire internally. Besides his building program, Trajan once paid for the education of 5,000 poor boys. He also crushed various jewish revolts and in the process made the Greeks of the eastern Mediterranean more supportive of Rome. Basically Trajan ushered in the Golden Age of the second century, which a well-known Greek orator praised so much.

Expanded the Roman empire to its greatest extent - his conquests included Arabia Petraea,Dacia (modern Romania) and parts of Mesopotamia.

Built Trajan's Arch.

Built Trajan's Forum,which included the world's first shopping mall.

His redevelopment of the Circus Maximus made it the biggest sports stadium ever - over 500 yards long,and with seating for 250,000 spectators.