under which emperor its construction begun?
Vespasian
Colosseum
Construction of the Colosseum began under the rule of Vespasian in around 70–72 AD (73–75 AD according to some sources).
who brought the third punic war to a successful conclusion Scipio Aemilianus when did this war begin and end? From 149 to 146 BC between which two civilizations this war was fought? Carthage and Rome what was the reason for this war? Scipio Africanus imposed a peace treaty on the Carthaginians which stripped them of their overseas territories, and some of their African ones. An indemnity of 10,000 silver talents was to be paid over 50 years. where is the civilization or the city latter mentioned located? Italy how can you describe its local government? It constitutes a comune "speciale", named "Roma Capitale", governed by a mayor and a city council. which pilgrimage site does the city has? Pilate's stairs, the "Scala Santa" and churches like San Luigi dei francesi and Santa Maria dell'Anima, to name a few. which is the common dialect spoken there? The Tuscan dialect and the Romanesco. can you mention some ancient monuments of this place? The Colosseum, the Roman Forum, the Domus Aurea etc. when was this first ancient monument built? Began in  AD 72 and was completed in AD 80. what was this used for? gladiatorial contests and public spectacles such as mock sea battles,  animal hunts, executions, re-enactments of famous battles, and dramas based on Roman mythology. does it have any significance on any religion? It is generally regarded by Christians as a site of the martyrdom of large numbers of believers during the persecution of Christians in the Roman Empire.
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Colosseum [SEP] Construction, inauguration, and Roman renovations
Along with this free source of unskilled labor, teams of professional Roman builders, engineers, artists, painters and decorators undertook the more specialized tasks necessary for building the Colosseum. The Colosseum was constructed with several different materials: wood, limestone, tuff, tiles, cement, and mortar. Construction of the Colosseum began under the rule of Vespasian in around 70–72 AD (73–75 AD according to some sources). The Colosseum had been completed up to the third story by the time of Vespasian's death in 79. The top level was finished by his son, Titus, in 80, and the inaugural games were held in 80 or 81 AD.