They had lost so many people in the first war, for no apparent national gain, that there was very strong political sentiment against waging another war if there were any possible way to avoid it. The Horror of war seemed far worse than any possible alternative to many people. Michael Montagne
Great Britain and France declared war on Germany in 1939, because germany had invaded land that Great britain had to protect for france.
Because Germany attacked Poland.
Germany in the triple alliance with Austria Hungary against Britain, Russia and France
There was a deal between Germany and Britain that Germany will not attack France but Hitler break the deal and attacked France, hence Britain jumped into the world war 2.
great britain, france, and russia.
Britain and France declared war on Germany on September 3, 1939. The reason was because Germany had launched a military invasion of Poland two days earlier, even though Britain and France had told Germany not to do so.
Britain and France had a defence pact with Poland. When German forces attacked Poland on 1st September 1939, Britain and France demanded that they withdraw. Germany ignored the request, so on 3rd September 1939 Britain and France issued a joint declaration of war against Germany.
Britain and France were the only two nations against Germany in early 1940 but only Britain in the second halve of the year as Germany successfully invaded France
When Germany invaded Poland, Britain and France had an agreement with Poland to come to Poland's aid should the country ever be invaded. As Germany refused to withdraw from Poland, Britain and France declared war against Germany.
Because they weren't sure they could win a war against the Italians, who had established ties with Germany. The Italian leader Mussolini dreamed of building a colonial empire in Africa like those of Britain and France, and had a formidable navy.
They said if Germany invaded Poland they would protect it [Poland]. however, Germany did invade Poland, so Britain and France declared war.
Italy, Germany, and Vichy France.
This question needs more information. At a guess, Britain and France were allies during world wars 1 and 2, fighting against Germany (ww1) and Germany and Italy (ww2).
Britain & France fought against Germany in WW1 & WW2. I think it might be difficult to find a way of establishing that Britain & France caused War in Europe.
The three countries siding against Hitler's Germany were: Great Britain, France and the Soviet Union.
Both France and Britain declared war onto Germany after Nazi Germany Invaded Poland on September 1st 1939 in early hours of the morning.
In the First World War, Great Britain, France, and Russia fought against Germany. Germany was part of an alliance called the Central Powers.
Russia fought against Germany, as did France and Britain.
Britain, France, Russia and America
A declaration of war against Germany.
By Nazi Germany invading Poland, and Britain's ally, France joining Britain in declaring war against Germany, which in turn led Japan to declare war against Britain and France, which then escalated the war from a pan European to Global (eventually).