More than _______ citizens had lost their lives in the war.

6,000,000

6,000

600,000

60,000

600,000

More than 600,000 citizens had lost their lives in the war.

To determine the correct answer, you should look for historical information on the number of citizens who lost their lives in the war. One significant event in history that resulted in a high number of casualties is World War II. During this war, millions of people lost their lives.

In this case, the correct answer is "6,000,000" citizens who lost their lives in the war. This number represents the devastating consequences of World War II, where casualties included both military personnel and civilians from various countries involved in the conflict.