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The British were a part of the Anglo-Polish military alliance, an agreement between several countries, including England, France, and Poland. When the Germans invaded Poland in the fall of 1939, Great Britain gave the Germans an ultimatum to pull all of their troops out of Poland immediately, but Germany ignored them. A day later, Great Britain and France declared war on Germany, as they had agreed to do as part of the military alliance.

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9y ago
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11y ago

On 1 September 1939, German troops attacked Poland. Britain and France had a defence agreement with Poland stating that they would come to its aid if it was attacked. Consequently, on 3 September 1939, Britain and France declared war on Germany.

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11y ago

In the 1930's, Britain and France had a defence agreement with Poland which stated that if Poland was attacked, Britain and France would come to its aid.

On 1 September 1939, German troops invaded Poland, so on 3 September 1939, Britain and France declared war on Germany.

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13y ago

Quite the opposite, the US did not declare war on Germany, but Germany declared war on them.

They did this to honor their alliance with Japan after the Pearl Harbor attacks.

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10y ago

3 September 1939 after Germany had invaded Poland two days earlier.

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12y ago

the invasion of Poland by Germany

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12y ago

Because Germany attacked France

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15y ago

Because Germany invaded Poland.

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Q: Why Britain and France declared war on Germany?
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Related questions

What happen after Germany invaded Poland in 1939?

France and Britain declared war on Germany.


When did Great Britain and France war against Germany and why?

Great Britain and France declared war on Germany in 1939, because germany had invaded land that Great britain had to protect for france.


What year did Britain and France go to war?

Britain and France declared war on Germany on 3 September 1939


When did France and great Britain declare war against Germany and why?

Great Britain and France declared war on Germany in 1939, because germany had invaded land that Great britain had to protect for france.


When did great Britain and France declare war against Germany and why?

Great Britain and France declared war on Germany in 1939, because germany had invaded land that Great britain had to protect for france.


France and Britain declared war on Germany after they had invaded what?

Poland


Who declared war on Germany on September the 3 1939?

September 1st 1939 Germany declared war on Poland. To honour the treaty between Poland, France and UK, France and UK declared war on Germany.


What country did Germany invade to cause war?

France. Germany and France share a border.


What events started the world war 2?

Germany invading Poland and the us joined the fight when Japan bombed Pearl Harbor.


What did Germany do to cause great Britain and France to declare war on them?

When Germany invaded Poland, France and England declared war on Germany, this started WWll


Why France and Great Britain declared war on Germany?

When did England and France declare war on who? Please clarify.


Great Britain and France declared war when Germany attacked what country?

Poland