Poland.
Germany invaded Poland on September 1, 1939, which prompted Britain and France to declare war on Germany shortly thereafter. This invasion marked the beginning of World War II. The aggressive expansion of Nazi Germany, under Adolf Hitler, violated international agreements and escalated tensions in Europe, leading to widespread conflict.
Britain declared war on Germany on September 3, 1939. This declaration came shortly after Germany invaded Poland on September 1, 1939, prompting Britain and France to respond in defense of Poland. The formal declaration marked the beginning of Britain's involvement in World War II.
Great Britain and the United States were allies to defeat Germany so the US would not attack Great Britain.
Great Britain was led into World War I by Prime Minister Herbert Asquith. The war was triggered by a complex web of alliances, militarism, and nationalism, alongside the assassination of Archduke Franz Ferdinand of Austria-Hungary in June 1914. As tensions escalated, Britain honored its commitment to defend Belgium's neutrality after Germany invaded Belgium in August 1914, prompting Britain to declare war on Germany.
Poland.
Czechoslovakia
if you mean which country it was Poland
The 1939 invasion of Poland caused Britain to declare war on Germany, which started WWII.
Belgium .
Britain declared war on Germany on September 3, 1939. This declaration came shortly after Germany invaded Poland on September 1, 1939, prompting Britain and France to respond in defense of Poland. The formal declaration marked the beginning of Britain's involvement in World War II.
To response to Germany invasion of Belgium.
Germany didn't declare war in 1915 against anyone, it was actually Britain that declared war on Germany
Britain was the first to declare war on Germany and New Zealand and the rest of the commonwealth felt like they wanted to help britain defeat germany
1939
He didn't. Britain declared war with Germany.
Germany attacked a Poland A British ally.