Final answer:
Germany annexed Austria, Czechoslovakia, and Poland before the outbreak of WWII.
Step-by-step explanation:
Germany annexed Austria, Czechoslovakia, and Poland before the outbreak of WWII. In 1938, Germany annexed Austria through a process known as Anschluss. Later that year, Germany forcibly occupied the Sudetenland region of Czechoslovakia. Finally, in 1939, Germany invaded Poland, which triggered the start of World War II.