FIRST STEAM@@LOCOMOTIVE@@IN U.S.

NAT TURNER@@LEADS SLAVE@@REVOLT

MOBY DICK@@PUBLISHED

DRED SCOTT@@DECISION

CHEROKEES@@MOVED TO@@OKLAHOMA

BLACK@@HAWK@@WAR

JOHN BROWN@@RAIDS@@HARPER'S FERRY

KU KLUX KLAN@@FORMED

FIRST ADHESIVE@@POSTAGE@@STAMPS

MORMONS@@SETTLE@@IN UTAH

GOLD@@DISCOVERED IN@@CALIFORNIA

SEWING@@MACHINE@@INVENTED

MEXICAN@@WAR

TEXAS@@STATEHOOD

FIRST USE OF@@TELEGRAPH@@LINE

SETTLEMENT OF@@OREGON VIA@@OREGON TRAIL

FIRST USE OF@@ANESTHETIC

FIRST WAGON@@TRAIN TO@@CALIFORNIA

IT HAPPENED@@IN THE@@1840s