A war fought from 1914 to 1918, in which
Britain, France, Russia, Belgium, Italy, Jap
an, the United States, and other allies
defeated Germany, AustriaHungary, Turkey, and Bulgaria.
A 1917 diplomatic proposal from the German
Empire for Mexico to join the Central
Powers, in the event of the United
States entering World War I on the side of
the Entente Powers. The proposal was
intercepted and decoded by British
intelligence. Revelation of the contents
outraged American public opinion and
helped generate support for the United
States declaration of war on Germany in
April of that year.
a principle in the international law and law
of the sea. It stresses freedom to
navigate the oceans. It also disapproves
of war fought in water. The freedom is to
be breached only in a necessary
A British ocean liner, holder of the Blue
Riband and briefly the world's biggest
ship. She was launched by the Cunard
Line in 1907, at a time of fierce
competition for the North Atlantic trade.
In 1915 she was torpedoed and sunk by
a German U-boat, causing the deaths of
A promise made in 1916 during World War
I by Germany to the United States prior to the
latter's entry into the war.
Passenger ships would not be targeted;
Merchant ships would not be sunk until the
presence of weapons had been established, if
necessary by a search of the ship;
Merchant ships would not be sunk without
provision for the safety of passengers and
Submarine warfare in World War I was partly a
fight between German U-Boats and
Atlantic supply convoys bound for Great
Britain. British and Allied submarines
conducted widespread operations in the
Baltic, North Sea, Atlantic, Mediterranean
and Black Seas. A type of naval warfare in
which submarines sink vessels such as
freighters and tankers without warning, as
opposed to attacks per prize rules (also
known as "cruiser rules").
The Selective Service Act or Selective Draft
Act authorized the federal government
to raise a national army for the American
entry into World War I through
Defendant's criticism of the draft was not
protected by the First
Amendment, because it created a clear
and present danger to the enlistment
and recruiting service of the U.S. armed
forces during a state of war.
The American Expeditionary Forces were
the United States Armed Forces sent to
Europe in World War I. During the United
States campaigns in World War I the AEF
fought in France alongside French and
British allied forces in the last year of the
war, against Imperial German forces
A general officer in the United States
Army who led the American
Expeditionary Forces in World War I.
Pershing is the only person to be
promoted in his own lifetime to the
highest rank ever held in the United
States Army—General of the Armies.
Part of the final Allied offensive of World
War I that stretched along the entire
western front. It was fought from
September 26, 1918, until the Armistice.
One of the most decorated American
soldiers in World War I. He received
the Medal of Honor for leading an
attack on a German machine
gun nest, taking 32 machine guns, killing
28 German soldiers and capturing 132
A type of combat in which opposing
troops fight from trenches facing each
A German submarine used in World War I
As World War I erupts in
Europe, President Woodrow
Wilson formally proclaims the neutrality of
the United States, a position that a vast
majority of Americans favored, on
August 4, 1914.
The "Fourteen Points" was a 1918 statement
by United States President Woodrow
Wilson that the Great War was being
fought for a moral cause and for postwar
peace in Europe.
The Treaty of Versailles was one of the
peace treaties at the end of World War I.
It ended the state of war between
Germany and the Allied Powers. It was
signed on 28 June 1919, exactly five
years after the assassination of Archduke
World War I reparations were the
payments and transfers of property and
equipment that Germany was forced to
make under the Treaty of Versailles
following its defeat during World War I.
International organization created to
ensure world stability.
An American Republican Senator and
historian from Massachusetts. He is best
known for his positions on foreign
policy, including his opposition to U.S.
involvement in WWI, and his battle with
President Woodrow Wilson in 1919 over the
Treaty of Versailles. Lodge demanded
Congressional control of declarations of
war; Wilson refused and the United States
Senate never ratified the Treaty nor joined
the League of Nations.
A policy of national isolation by abstention
from alliances and other international
political and economic relations.