S . ▁President ▁Abraham ▁Lincoln ▁signs ▁a ▁bill ▁into ▁law ▁creating ▁the ▁U . S . ▁Bureau ▁of ▁Agricult ure ▁( l ater ▁renamed ▁U . S . ▁Department ▁of ▁Agricult ure ). ▁ ▁May ▁ 2 0 ▁– ▁U . S . ▁President ▁Abraham ▁Lincoln ▁signs ▁the ▁Hom est ead ▁Act ▁into ▁law . ▁ ▁May ▁ 2 4 ▁– ▁West min ster ▁Bridge ▁is ▁opened ▁in ▁England . ▁This ▁new ▁bridge , ▁designed ▁by ▁Thomas ▁Page , ▁rep laces ▁the ▁old ▁bridge . ▁ ▁June ▁ 1 ▁– ▁American ▁Civil ▁War ▁– ▁Battle ▁of ▁Fair ▁O aks : ▁Both ▁sides ▁claim ▁victory . ▁ ▁June ▁ 4 ▁– ▁American ▁Civil ▁War : ▁Confeder ate ▁troops ▁ev acu ate ▁Fort ▁P ill ow ▁on ▁the ▁Mississippi ▁River , ▁leaving ▁the ▁way ▁clear ▁for ▁U . S . ▁Army ▁troops ▁to ▁capture ▁M emph is , ▁Tennessee . ▁ ▁June ▁ 5 ▁– ▁Tre aty ▁of ▁Sa ig on : ▁Emperor ▁T ự ▁ Đ ứ c ▁of ▁the ▁N gu y ễ n ▁dynast y ▁in ▁Vietnam ▁c edes ▁Sa ig on , ▁C ô n ▁S ơ n ▁Island ▁and ▁three ▁southern ▁provinces ▁of ▁what ▁is ▁to ▁become ▁known ▁as ▁C och inch ina ▁( Bi ên ▁H ò a , ▁Gia ▁ Đ ị n h , ▁and ▁ Đ ị n h ▁T ư ờ ng ), ▁to ▁become ▁part ▁of ▁the ▁French ▁colonial ▁emp ire . ▁Guer illa ▁leader ▁Tr ư ơ ng ▁ Đ ị n h