You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.

Title: Marcus Buys Khakis. Sentence 1: Marcus needed clothing for a business casual event. Sentence 2: All of his clothes were either too formal or too casual. Sentence 3: He decided to buy a pair of khakis. Sentence 4: The pair he bought fit him perfectly.
Solution: Marcus was happy to have the right clothes for the event.
Why? Marcus is buying clothes for a business event.

New input: Title: Europe First. Sentence 1: Hitler has invaded several countries and this scares England. Sentence 2: England asked America for help. Sentence 3: America was at war herself, but agreed. Sentence 4: England and America decided to work together in Europe first.
Solution:
Then they teamed up to win America's war too.