He divided his kingdom into provinces and had a trusted governor for each one. He also, maintained a large standing army to protect his people.
Answer:Christianity spread through the Roman Empire and eventually it received legal status in 313 CE. This was an important development because it meant that Christians could openly practice their religion. ... In 380 CE, Christianity gained even more influence when it became the official religion of the Roman Empire.
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The cholera epidemic. The others were factors, but not as serious.