Place these events in the order in which they occurred: -Germany invades Poland
-World Leaders write the the Treaty of Versailles
-Britain and France declare war on Germany
-The U. S. declares war on Japan
-Japan attacks the U. S. at Pearl Harbor

World Leaders write the Treaty of Versailles

Germany invades Poland

Great Britain and France declare war on Germany

Japan attacks the US at Pearl Harbor

US declares war on Japan

Hope this helps!

spring of 1919 Treaty of Versailles

September 1st, 1939 Germany invaded Poland

September 3, 1939 Britain and France declare war on Germany

December 7th, 1941 Japan staged an attack on pearl harbor

December 8, 1941 the U.S. declares war on Japan

answer; collective security;

i truly dont know the answer wait i do its 1,3,4