421{| align=right cellpadding=3 id=toc style="margin-left: 15px;"\n|- \n| align="center" colspan=2 | Years:417 418 419 420 - 421 - 422 423 424 425\n|-\n| align="center" colspan=2 | Decades: 390s 400s 410s - 420s - 430s 440s 450s\n|- \n| align="center" | Centuries: 4th century - 5th century - 6th century\n|} Events\n*February 8 - Constantius III becomes Co-Emperor of the Western Roman Empire\n*June 7 - Roman Emperor Theodosius II marries Aelia Eudocia, formerly known as Athenais.\n*Theodosius declares war on Persia. Births Deaths\n*September 2 - Constantius III, Co-Emperor of the Western Roman Empire\n*Emperor Gong of Jin China \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n |
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"I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use." - Galileo Galilei |
