Diocletian was the Roman Emperor between years 284 and 305. During this reign, he managed to stabilize the empire and brough the so-called Crisis of the Third Century, to an end.
Diocleatian decided to appoint Maximian as co-emperor, so that he would rule the Eastern side of the Empire while Maximian would rule the Western one. Each of them appointed a junior co-emperor, who operated under their command, so <u>it ended up becoming a "rule of four" or tetrarchy, and each ruled a quarter fraction of the empire. </u>
One of the main purposes of the British Declaratory Act of 1766 was to end the boycotts that were taking place in America over British goods, due to what the colonists saw as unfair taxation.