Because many people mistakenly think a tsunami is a single wave, some return to the beach after the first wave hits, Lopes said. On March 11, 2011, a man in Klamath River, Calif., died after he was swept away by a second wave while taking pictures of the Japan tsunami, Lopes said.
Principate. The Principate is the first period of the Roman Empire, extending from the beginning of the reign of Augustus Caesar to the Crisis of the Third Century, after which it was replaced with the Dominate.
This is a list of Roman legions, including key facts about each legion, primarily focusing on Principate (early Empire, 27 BC â 284 AD) legions, for which there exists substantial literary, epigraphic and archaeological evidence.his was the result of the military reforms of Emperors Diocletian and Constantine I, and of further developments during the 4th century. The legions were identified by Roman numerals, though the spelling sometimes differed from the modern standard.