why did Britain & France respond to germany that way in ww2

Britain and France responded to Germany in certain ways during World War II for various reasons:

1. Treaty obligations: Britain and France had guaranteed the independence of Poland through a mutual defense pact. Whence Germany invaded Poland in September 1939, Britain and France were compelled to declare war on Germany to honor their treaty obligations.

2. Avoiding a repeat of World War I: Following the devastation of World War I, both Britain and France were determined to prevent a repeat of the loss of life and destruction. They believed that a strong response to German aggression would deter further expansion and aggression in Europe.

3. Perception of German threat: Britain and France initially perceived Germany's actions as limited to certain territorial claims and considered a strong response necessary to safeguard the European balance of power. Additionally, they were skeptical of Adolf Hitler's intentions and sought to prevent German hegemony in Europe.

4. Historical animosity: Britain and France had a historically tumultuous relationship with Germany, particularly due to World War I. The memories of the Great War and the subsequent heavy repercussions Germany faced through the Treaty of Versailles influenced their approach towards Germany during World War II.

5. Defense of democratic values: Both Britain and France considered themselves defenders of democratic ideals and sought to protect their own national interests, as well as the principles of liberty and freedom they held dear. They aimed to stop the spread of fascism promoted by Nazi Germany.

However, it's important to note that the responses of Britain and France to Germany throughout World War II were complex and evolved over time, based on various factors, including military strategies, changing alliances, and geopolitical considerations.