Constantine reigned during the 4th century CE and is known for attempting to Christianize the Roman Empire. He made the persecution of Christians illegal by signing the Edict of Milan in 313 and helped spread the religion by bankrolling church-building projects, commissioning new copies of the Bible, and summoning councils of theologians to hammer out the religion's doctrinal kinks. Constantine was also responsible for a series of important secular reforms that ranged from reorganizing the Roman Empire's currency system to restructuring Rome's armed forces. His crowning achievement was his dedication of Constantinople as his new imperial capital in 330.
Now we have checks by airport security which are more advanced. Though they have lead to concerns about privacy and overreaching boundaries they were caused because of the attacks on 9/11 and anxiety and fear that came about from that day
I’m not sure if this is right , but they explored most of the land
