Sections:

• Welcome
• American History
• European History
• Latin American History
• African History

Topics for this Section:

• The Development of Native American Culture to 1500
  1. Introduction
  2. Changes over Time: 10,000 BC to 1200 AD
  3. Summary
  4. Native North Americans on the Eve of European Contact
• European Exploration and Early Settlement 1492-1700
  1. Introduction
  2. European Exploration: 1492–1565
  3. Early Colonization and Initial Areas of Control: 1565-1690
  4. North America in 1700
• The Struggle for Colonial Control of North America 1689-1763
  1. Introduction
  2. The Struggle for Colonial Control of North America: 1689–1763
  3. Summary
• Population and Diversity in America: the Colonial Period
  1. Introduction
  2. European Settlement: 1700–1780
  3. American Diversity: ca. 1750
  4. Summary
• Native American Tribes 1783
• The American Revolution
  1. Introduction
  2. The American Revolution
  3. Summary
• Constitutionalism
  1. Introduction
  2. Government and Land Claims: 1783
  3. Ratification of the National Constitution: 1787-1790
  4. Summary
• Status of Slavery in Original 13 States
• Territorial Expansion of the United States 1783-1853
  1. Introduction
  2. Territorial Expansion of the United States: 1783–1853
  3. Summary
• Alaska and Hawaii
• Journeys of Lewis & Clark : 1804-1806
• The War of 1812
  1. Introduction
  2. The War of 1812
  3. Summary
• Jackson's Campaigns in Florida 1818
• Territory ceded by Spain 1810-1819
• Texas 1836
• The Mexican War
  1. Introduction
  2. The Mexican War
  3. Summary
• Oregon Country 1843-1848
• The Spread of Cotton and of Slavery 1790-1860
  1. Introduction
  2. The Spread of Cotton: 1790–1860
  3. The Spread of Slavery: 1790–1860
  4. The Spread of Cotton and Slavery
  5. The Economics of Cotton
  6. Summary
• Compromises Over Slavery
  1. Introduction
  2. The Missouri Compromise: 1820
  3. The Compromise of 1850: The Status of Slavery
  4. Summary
• Gadsden Purchase and Proposed Rail Routes 1853
• The Political Revolution of the 1850s
  1. Introduction
  2. The Kansas-Nebraska Act: 1854
  3. Congressional Elections: 1850–1858
  4. Summary
• The Presidential Election of 1860
  1. Introduction
  2. The Presidential Election of 1860 by County
  3. Electoral Vote by State: 1860
  4. Comparison of County and State Data
  5. Summary
• The U.S. Civil War, Part I
  1. Introduction
  2. Secession
  3. Eastern Theater: 1861–1863
  4. Summary
• U.S. Civil War, Part II
  1. Introduction
  2. The Western Theater: 1862-1863
  3. Union Victory
  4. Summary
• Reconstruction
  1. Introduction
  2. Military Districts in the South: 1867
  3. Duration of Radical Governments in the South
  4. Summary
• Industrialization 1870-1930
  1. Introduction
  2. The Changing American Workforce: 1870–1930
  3. World Industrial Production: 1870–1930
  4. Large-Scale Industry in 1900
  5. Summary
• Population and Immigration 1800-1910
  1. Introduction
  2. Population Maps
  3. Foreign-born Population
  4. Graph of Immigration
  5. Summary
• The Political Revolution of the 1890s
  1. Introduction
  2. The Political Revolution of the 1890s
  3. Populist Strength in the Election of 1892
  4. Summary
• Toward Empire: Overseas Expansion 1865-1910
  1. Introduction
  2. Middle America and the Caribbean
  3. The United States in the Pacific
  4. The Great White Fleet
  5. Summary
• World War I
  1. Introduction
  2. The Western Front: 1914
  3. The Western Front: 1915–1918
  4. The War in Eastern Europe and the Middle East
  5. The Colonial War
  6. The United States: From Neutrality to Belligerency
  7. The Financial Cost of the War
  8. Summary
• The Great Depression
  1. Introduction
  2. Stock Prices: 1923–1939
  3. Unemployment: 1925–1945
  4. Unemployment Relief: 1934
  5. Summary
• The Political Revolution of the 1930s
  1. Introduction
  2. The Political Revolution of the 1930s
  3. Summary
• World War II: The Pacific Theater
  1. Introduction
  2. Japanese Expansion to Spring: 1942
  3. The Turning Point: April to December 1942
  4. The U.S. Counterattack: 1943–1945
  5. Summary
• World War II: The European Theater
  1. Introduction
  2. Germany Resurgent
  3. Blitzkrieg: 1939-1940
  4. The Mediterranean Front: 1940-1943
  5. The Eastern Front: 1941-1943
  6. The Western Front: June 1944 to May 1945
  7. The Battle of Normandy and the Breakout: June-July 1944
  8. Summary
• Cholera
  1. Introduction
  2. The Epidemic of 1832
  3. The Epidemic of 1848-49
  4. The Epidemic of 1866
  5. The Epidemic of 1873
• Polio
  1. Introduction
  2. Incidence in the U.S., 1912-1972
• Diphtheria
  1. Introduction
  2. Incidence in the U.S., 1860-1960
• Life Expectancy 1850-2000
  1. Introduction
  2. Life Expectancy Graphs
  3. Review Questions

Introduction

Polio is caused by a virus that enters the human body through the mouth and produces a mild infection in the small intestine. In a small percentage of cases, the infection spreads to the bloodstream and destroys cells in the central nervous system that are responsible for muscular contraction. The result can be serious illness, paralysis, or death.

Primarily a childhood disease, polio is spread by human-to-human contact and through contaminated food and water. Victims with mild cases can become inadvertent carriers. Though believed to be present in ancient Egypt and ancient Greece, polio was not recognized as a widespread threat to public health prior to cluster outbreaks during the nineteenth century in Europe and the United States. Public recognition in the US intensified after Dr. Charles Caverly documented a mini- epidemic of polio in his hometown of Otter Valley, Vermont, where 123 cases of the disease in 1884 left 50 people paralyzed and 18 dead. During the first half of the twentieth century polio crippled and killed thousands of children in the United States. Despite notable successes against bacterial diseases during that period, this viral affliction continued to baffle the scientific community. Probably because its victims were children, often from comfortable social situations, anti-polio campaigns galvanized one of the most successful fund-raising efforts in US history around mid-century. In the mid-1950s, rival scientists Jonas Salk and Albert Sabin developed vaccines that dramatically and quickly ended polio as a serious disease in nations that could afford to vaccinate their populations.