Romans adopted some Etruscan sporting events.
One popular Etruscan sporting event is gladiator fighting. Gladiator fighting began with an Etruscan funeral ritual. This sport was very violent as it involved fighting to death. Another Etruscan sport that Romans adopted is chariot riding
The most popular religion on earth is Christianity.
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The transcontinental railroad united the nation through trade
The extension of the Great Wall reduced contact between china and the outsiders.
