How was the united kingdom's treatment of czechoslovakia different from its treatment of poland in the years before world war ii?

The United Kingdom, France, Italy, and Nazi Germany signed the Munich treaty to force Czechoslovakia to cede the mostly German-populated Sudetenland, a region that held the Czechoslovak border fortifications and defense line against German invasion, allowing Germany to invade and occupy Czechoslovakia a year later.

In this case, although morally objectionable, no previous promises from Britain to Czechoslovakia were broken.

On the other side, a mutual military assistance alliance between the United Kingdom and Poland was formalized by the Anglo-Polish Agreement in 1939.  Upon the invasion of Poland by Nazi Germany, Britain declared war on Germany but did not launch a full land attack on Germany: most British bomber activities was the dropping of propaganda leaflets and reconnaissance. Without the promised British aid, Poland was overcome.  

i don't get what you mean

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