What country joined World War I in 1917 after the United States entered the war?
Answer: Romania
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Generate a historical trivia question about the following topic.

### Input:
Topic: World War I

### Response:
What country joined World War I in 1917 after the United States entered the war?
Answer: Romania
assistant

Here's a historical trivia question about World War I:

What was the name of the German submarine that, on November 1, 1914, sank the British passenger liner Lusitania, killing over 1,000 civilians, including women and children?

A) U-20
B) U-47
C) U-101
D) U-65

Answer: C) U-101