Nebraska Nebraska State Government Nebraska stems from the Sioux name for the Platte River, omaha ni braska, meaning flat water. Capital: Lincoln Largest Cities: Bellevue, Broken Bow, Chadron, Grand Island, Hastings, Kearny, Norfolk, North Platte, Omaha, ScottsBluff, South Sioux City, Valentine Present Constitution Drafted: 1875 Entered Union: March 1, 1867 (37) Motto: “Equality before the law” State Flower: Goldenrod State Tree: Cottonwood State Bird: Western Meadowlark State Dog: Not Specified State Insect: Honeybee State Song: “Beautiful Nebraska” Nickname: Cornhusker State, Beef State