Adolf Hitler, the _____ politician, was responsible for the genocide of millions of Jews during the Second World War.

Introduction / Context:
This question tests basic world history knowledge about Adolf Hitler and the political regime responsible for the Holocaust, the systematic genocide of millions of Jews and other groups during the Second World War. While Hitler was Austrian born, he is historically described as the leader of Nazi Germany and is therefore widely referred to as a German politician. Recognising this standard description is important for history and general awareness examinations.

Given Data / Assumptions:

• The sentence states that Adolf Hitler was responsible for the genocide of millions of Jews during the Second World War.
• The blank before the word politician must be filled with a nationality.
• Options include German, French, Austrian, British, and Italian.
• The expected answer is the nationality by which he is commonly identified in historical accounts.

Concept / Approach:
Although Adolf Hitler was born in Austria, he became the leader of the National Socialist German Workers Party and rose to power in Germany. He served as Chancellor and later as Führer of Germany, guiding its aggressive expansion and genocidal policies. As a result, history books, articles, and exam questions consistently describe him as a German dictator or German politician. The blank therefore should be filled with German rather than his birthplace nationality, because it refers to his political role and state leadership.

Step-by-Step Solution:
Step 1: Understand that the sentence is asking about Hitler political identity during the Second World War. Step 2: Recall that he headed the government of Nazi Germany and directed German military and racial policies. Step 3: Recognise that history texts usually label him as a German dictator or German Nazi leader. Step 4: Examine the options German, French, Austrian, British, and Italian. Step 5: Choose German as the nationality word that correctly completes the description of Hitler as a politician responsible for the Holocaust.

Verification / Alternative check:
To verify, think of standard phrases you have read: Hitler was the German dictator during World War II, or Hitler was the leader of Nazi Germany. In none of these phrases is he introduced as a French, British, or Italian politician. While advanced historical discussions might note his Austrian birth, exam oriented summaries nearly always refer to his German political identity. Therefore, German is the correct and widely accepted choice.

Why Other Options Are Wrong:
French is wrong because France fought against Nazi Germany and Hitler was never a French leader. Austrian is his birth nationality, but he did not lead Austria as a politician and is not usually described as an Austrian politician in exam contexts. British is incorrect because the United Kingdom opposed Hitler during the war. Italian is also wrong because Italy was led by Benito Mussolini, not Adolf Hitler. These options are included to test whether you focus on his role as the head of Germany rather than on unrelated or partial facts.

Common Pitfalls:
A potential pitfall is overthinking based on the fact that Hitler was Austrian born, which might tempt some students to select Austrian. However, the question emphasises his role as a politician responsible for genocide, which refers to his time as leader of Germany. Another mistake is to guess randomly among European nationalities without recalling historical context. A good strategy is to tie each world war leader to a specific country, such as Hitler with Germany, Mussolini with Italy, and Churchill with Britain, so that you can answer such questions instantly.

Final Answer:
Adolf Hitler was the German politician responsible for the genocide of millions of Jews during the Second World War.