Trench warfare, as practiced by these Russian soldiers awaiting a German assault, characterized World War I.
Photograph by George H. Mewes, National Geographic
murder of someone of political importance.
to become or make wider.
a disagreement or fight, usually over ideas or procedures.
to state clearly, in formal terms.
to overpower or control.
group of nations, territories or other groups of people controlled by a single, more powerful authority.
political unit made of people who share a common territory.
person who identifies strongly with promoting the independence (and sometimes the superiority) of their nation.
long, deep depression, either natural or man-made.
large-scale armed conflict.
tool to hurt or combat an opponent.
(1914-1918) armed conflict between the Allies (led by the United States, the United Kingdom, and France) and the Central Powers (led by Germany and Austria-Hungary). Also called the Great War.