Step 1: Understanding World War 1.
World War 1, also known as the Great War, was one of the largest and deadliest conflicts in history.
Step 2: Key dates.
The war began on July 28, 1914, and ended on November 11, 1918, making the duration of the war 1914 - 1918.
Step 3: Conclusion.
Therefore, World War 1 began in 1914 and ended in 1918, making option (2) the correct answer.