Yes, due to advance in culture, technology and many other factors.
Roman marriages were pagan.
Constantine was Christian himself. Since roman emperors were dictators, they quickly obeyed his new law.
Yes. Roman marriages were pagan; many current marriages are Christian.
Italians have been predominantly Catholic since the last days of the Roman empire. (dead link removed)
As of my last update, Roman De Peralta is not known to have a girlfriend. His personal life may have changed since then.
Rome expanded into central and southern Italy as a result of the Second and Third Samnite Wars (326-304 BC and 298-290 BC). She gained control of the whole of Italy in 192 BC. The conventional date given for the fall of the western part of the Roman Empire is 476 AD.
Mainly Christianity, since Italy has been Christian for many centuries now.
His parents were considered as Roman citizens since Britain was mostly under Roman control at the time. However, it is unclear if they were originally from Italy or were Roman citizens because they were born in Roman Britain.
six Japanese emperors have been kights of the garter since 1340
Charlemagne and the Byzantine Emperors ruled countries with the same name, Empire of the Roman People. Since the Byzantines got the name first, they were a bit upset when Charlemagne took it. Please see the related question below for more information.
Since the beginning of the Roman empire began with the city of Rome, you would have to say it began in the present day country of Italy.
The Lira has not been a unit of the Italian currency since Italy changed over to the Euro in 2002.