20 events

Presents biographical sketches of twenty people who made significant contributions to the history of the twentieth century, including Jane Addams, Ho Chi Minh, Lech Walesa, and Nelson Mandela.

Describes 20 ways of transportation illustrating the history of various modes of transportation.

Text and accompanying photographs highlight twenty events that influenced the history of the United States, including the Louisiana Purchase, the building of the transcontinental railroad, the bombing of Pearl Harbor, and much more.

Describes twenty famous disasters, from the eruption of Mount Vesuvius, to the sinking of the Titanic, to Hurricanes Andrew and Iniki.

Presents highlights of twenty battles which changed the modern world, including the three days at Gettysburg, the bombing of Guernica, the Tet offensive, and the Six-Day War.

Profiles 21 women who have achieved greatness in the areas of education, social work, politics, aviation, science, the fine arts, entertainment, and church work. Illustrated with photographs.

Describes the journeys of twenty explorers who opened up new worlds, from Marco Polo to Roald Amundsen.

Describes twenty inventions that changed modern life, including the steam engine, photography, and television.