1815-1824. Era of Good Feeling.
1819. The Florida Treaty.
1820. Missouri Compromise.
1823. The Monroe Doctrine.
1825. The Erie Canal.
1828. Election of Jackson.
1830. The Locomotive.
1832. The Nullification Episode.
1840. Election of William H. Harrison.
1844. The Electric Telegraph.
1845. The Horse Reaper.
1845. Annexation of Texas.
1846. The Oregon Treaty.
1846-1848. The Mexican War (Acquisition of California, New Mexico, etc.)
1849. California (Discovery of Gold).
1850. Compromise of 1850.
1854. Kansas-Nebraska Act.
1857. The Dred Scott Case.
1861-1865. The War for the Union.
1863. Emancipation Proclamation, Vicksburg, and Gettysburg.
1867. Purchase of Alaska.
1867. Reconstruction Acts.
1868. Impeachment of Johnson.
1876. The Electoral Commission.
1881-1883. Civil Service Reform.
1890. Sherman Silver Law (Repealed, 1893).
1898. The War with Spain.