To what extent you think Appeasement (1938) started ww2:

Firmly in power in Berlin, Hitler started his plan for Germany's expansion.He knew war was inevitable--he had been planning for it since 1933, so he ignored the T of V, and in 1935 Germany was rearming; later on the same year, he remilitarized the Rhineland in 1936. By March 1938, Hitler neglected the Treaty again and reunited, with Austria, his homeland into the German Reich. London and Paris turned away. Hitler made demands upon the Sudetenland populated mostly …

…nothing more than giving in to a bullie: by scared Britain that pushed all the rest. Germany was very powerfull indeed its military had raised but not as France and British navy which could have stopped Hitler from his megalomaniac need of expansion by 1938. Also another mistake was letting Chamberlain deal with Germany and his policy of Appeasement. Not only he miscalculated his time but Germany and Czechoslovakia; the end was tragic ww2 was coming.