World history (WWI): Identify the year when Germany was defeated at the Battle of Verdun on the Western Front and Romania declared war on the Eastern Front. Use the standard historical timeline of World War I to select the correct year for both events. Choose the correct year.

Given data

• Event 1: Germany's defeat at the Battle of Verdun (Western Front).
• Event 2: Romania declaring war (joining the Allies against Austria-Hungary) on the Eastern/South-Eastern theatre.
• Ask: Common year when both happened.

Concept/Approach
Fix the dates of the two milestones and choose the common year.

Step-by-step timeline
• Verdun was fought from February to December 1916; Germany failed to capture Verdun, and the offensive was ultimately repulsed. • Romania entered WWI by declaring war on Austria-Hungary on 27 August 1916, opening a new front. • Therefore, both key events align in 1916.

Common pitfalls
Confusing 1918 (Armistice) or 1914 (war outbreak) with the Verdun/Romania timeline.

Final Answer
1916