ate ▁invasion ▁of ▁New ▁Mexico ▁Territ ory . ▁ ▁March ▁ 3 1 ▁– ▁Victor ▁Hugo ' s ▁ep ic ▁French ▁historical ▁novel ▁Les ▁M isé rab les ▁is ▁published . ▁ ▁April – J une ▁▁ ▁April ▁ 1 ▁– ▁Second ▁French ▁inter vention ▁in ▁Mexico : ▁The ▁Spanish ▁and ▁the ▁British ▁end ▁their ▁al liance ▁with ▁France . ▁ ▁April ▁ 5 ▁– ▁American ▁Civil ▁War ▁– ▁Battle ▁of ▁York town : ▁The ▁battle ▁begins ▁when ▁Union ▁forces ▁under ▁General ▁George ▁B . ▁McC le ll an ▁close ▁in ▁on ▁the ▁Confeder ate ▁capital ▁of ▁Richmond , ▁Virginia . ▁ ▁April ▁ 6 – 7 – ▁American ▁Civil ▁War ▁– ▁Battle ▁of ▁Sh il oh : ▁The ▁Union ▁Army , ▁under ▁General ▁U ly ss es ▁S . ▁Grant , ▁defe ats ▁the ▁Confeder ates ▁near ▁Sh il oh , ▁Tennessee . ▁ ▁April ▁ 1 2 ▁– ▁American ▁Civil ▁War ▁– ▁Andrew ' s ▁Ra id : ▁Union ▁volunte ers ▁ste al ▁a ▁Confeder ate ▁locomot ive , ▁setting ▁off ▁the ▁Great ▁Lo comot ive ▁Ch ase , ▁fam ously ▁involving ▁the ▁use ▁of ▁The ▁General ▁steam ▁locomot ive , ▁which ▁still ▁exists ▁in ▁the ▁ 2 1 st ▁century . ▁ ▁April ▁ 1 3 ▁– ▁The ▁government ▁of ▁Vietnam ▁is ▁forced ▁to ▁c ede ▁the ▁territ ories ▁of ▁Bi ên ▁H ò a , ▁Gia ▁ Đ ị n h ▁and ▁ Đ ị n h ▁T ư ờ ng ▁to ▁France . ▁ ▁April ▁ 2 5