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Table of Contents

Introduction References & Edit History Related Topics

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The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd

Causes of the Great Depression

Calendar marking march 15th

22 Questions About Time and Timekeeping Answered

Lead image for "A Timeline of the World in 8 Maps"

A Timeline of the World in 8 Maps

Bar graph of the United States Death Toll during major events. Infogram chart.

U.S. Death Toll During Major Events

Close up of periodic table, focus on nickel, copper, zinc, palladium, silver, cadmium

When Was the Periodic Table Invented?

Meghan, Duchess of Sussex in 2019. (Meghan Markle, British royalty)

6 Things You Should Know About Meghan, Duchess of Sussex

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Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Topics

tracer bullet dumdum incendiary bullet Minié ball ammunition hard-target munition cartridge shell shrapnel

Key People

William Greener

British inventor and gunsmith

Henri-Gustave Delvigne

French officer and inventor

Claude-Étienne Minié

French military officer