Question

identify the event that officially began world war ii.

japan invaded russia.
nazi germany invaded the sudetenland.
nazi germany invaded poland.
japan invaded china.

Explanation:

Analyze the question prompt

The question asks to identify the event that officially began World War II.

Evaluate the options

• "Japan invaded Russia": This refers to border conflicts (like Khalkhin Gol) but did not start WWII.
• "Nazi Germany invaded the Sudetenland": This occurred in 1938 following the Munich Agreement and did not mark the official start of the global war.
• "Nazi Germany invaded Poland": On September 1, 1939, Germany invaded Poland, leading Britain and France to declare war on Germany, which officially began World War II.
• "Japan invaded China": This began the Second Sino-Japanese War in 1937, which later merged into WWII but is not the official starting event of the global conflict.

Determine the correct answer

The invasion of Poland by Nazi Germany on September 1, 1939, is universally recognized as the official start of World War II.

Answer:

• Japan invaded Russia.
• Nazi Germany invaded the Sudetenland.
• Nazi Germany invaded Poland. (Correct answer)
• Japan invaded China.