Cuando el cristianismo se convirtió en una religión oficial?

The correct answer is - 313 AD.

The Christianity as a religion was officially legalized in the year of 313 AD with the issuing of the Edict of Milan. The legalization of the Christianity was under the wings of the Roman emperor Constantine, who himself converted into Christianity after the Edict of Milan, and became the first Roman Emperor that was Christian.

most of the knowledge we have of the conflict comes from roman-jewish scholar titus flavius josephus, who first fought in the revolt against the romans, but was then kept by future emperor vespasian as a slave and interpreter.

answer; i believe its (jade); good luck