How did Constantine change the organization of the Roman Empire when he came to power?

Constantine stripped power from Roman senate and created extreme power for the emperor. He enlarged the army and created a new system with garrison troops and mobile units. He also built the city of Constantinople and some churches in Rome.

Explanation:

i just did something on this guy a few days a go give me two minutes to find it in my notes.

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.