16 THE SLIDE TO WAR 1918–
CANADA
GREENLAND
CHINA
INDIA
AUSTRALIA
USA
MEXICO
CUBA
ICELAND
SIAM
SOUTH-WEST
AFRICA
ALGERIA
LIBYA
MONGOLIA
FRENCH
INDOCHINA
TIBET
SYRIA
IRAQ
PERSIA
DUTCH EAST INDIES
FRENCH WEST AFRICA ANGLO-EGYPTIAN SUDAN PHILIPPINES
BRITISH
TOGO
NIGERIA
ANGOLA
MOZAMBIQUE
ETHIOPIA
KENYA
TANGANYIKA
EGYPT
BECHUANALAND
PALESTINE
LIBERIA
BRAZIL
ARGENTINA
BOLIVIA
CHILE
PERU
ECUADOR
COSTA RICA
EL SALVADOR
GUATEMALA
MOROCCO TRANSJORDAN
NICARAGUA
PANAMA
HONDURAS
URUGUAY
HAITI
DOMINICAN REPUBLIC
VENEZUELA
COLOMBIA
PARAGUAY
RUANDA-
URUNDI
BELGIAN
CONGO
FRENCH
TOGO
BRITISH
CAMEROONS
SOUTH
AFRICA
NORTHERN
RHODESIA
SOUTHERN
RHODESIA
FRENCH
CAMEROONS
FRENCH
EQUATORIAL AFRICA
PACIFIC
OCEAN
M
A
DA
G
AS
CA
R
JA
PA
N
IN
D
IA
N
U
S
S R
OC
EA
N
192
0 –
33
1931
1920–
1924–
1920–
1920–
1937
1923–
1934–
1920–
1920–
1920–
1934
1924
1920–
1920–
1920–
UGANDA
NYASALAND
MEMBERSHIP OF THE LEAGUE 1920–
The League had 42 founding members, and by 1934
its membership stood at 58. The US, Saudi Arabia,
Yemen, Mongolia, Bhutan, and Nepal never joined.
The USSR belonged only in 1934–1939, while Japan
and Germany left in 1933, Italy in 1937, and Spain in
- As colonies and mandates were excluded
from membership, most of Africa, Southeast Asia,
and the Pacific went unrepresented in the League.
2
1933 The New German
chancellor Adolf Hitler
quickly pulls Germany
out of the League.
1926 Brazil
becomes the
first founding
member of the
League to
leave.
1923 Britain acquires a mandate over
former Ottoman Palestine, and creates
Transjordan (later Jordan) as an
autonomous area.
1932 Former Ottoman Iraq becomes
the first (British) mandate to
achieve independence.
1935 The League imposes weak
sanctions on Italy after its invasion
of Ethiopia but fails to prevent
Italian seizure of the country.
1930 A League
report leads to the
Liberian government
outlawing slavery.
1932–34 The World Disarmament
Conference meets in Geneva with
representatives from 60 states but
fails to make any progress.
1936 The League refuses to
intervene in the Spanish Civil
War despite pleas from the
Republican government.
DRIVING DISARMAMENT 1926–
Under Article 8 of its founding covenant, the
League aimed to reduce world armaments. In
1926 it set up a commission to prepare for a world
conference on disarmament, which eventually met
in Geneva in 1932 but effectively collapsed in 1933
when Hitler withdrew. Meanwhile the Kellogg–
Briand Pact, an international treaty forged outside
the League in 1928, sought but failed to outlaw
conflict as an instrument of national policy.
THE FAILURE OF THE LEAGUE 1930–1939 5
The League settled a number of disputes around
the world, but it did not reduce the world’s stock
of armaments. Moreover, it significantly failed to
halt the military expansions in Germany, Italy, and
Japan that eventually led to World War II; the
hostile actions of these nations went unpunished
throughout the 1930s. Ultimately, the League’s
belief in collective security proved no match for
states acting in their own national interests.
6
1919 The US Senate refuses to
ratify the Treaty of Versailles,
thereby excluding the US from
the League.
1923 France acquires a mandate over
former Ottoman Syria, including the
future Lebanon.
FOUNDING OF THE LEAGUE 1919
Established under the Treaty of Versailles of 1919
that ended World War I, the League of Nations
met for the first time in Paris on January 10, 1920.
It consisted of a General Assembly of all member
states, an Executive Council limited to the major
powers, and a permanent secretariat. All were
based in Geneva, Switzerland. A Permanent Court
of International Justice, sitting in The Hague in the
Netherlands, judged disputes referred to it.
1
△ Giving peace a chance
This postcard in favor of
Switzerland’s membership of
the League of Nations in 1920
reveals a mood of optimism.
THE LEAGUE IN ACTION
Active from 1920 until its eventual replacement by the United
Nations in 1946, the League became largely irrelevant at the
outbreak of World War II.
2
3
4
5
6
1
1910 1930 1950 1970 1990
TIMELINE
Founder members
and states
Subsequent
members, with
dates of membership
KEY
Possessions of
member states
Mandated
territories
Non-member
states
States and their
possessions that
withdrew or
were expelled
Borders, 1930
See panel
US_016-017_League_of_Nations.indd 16 19/03/19 5:37 PM