Answer :

Well first off, expedition means: A journey that is taken to accomplish a specific goal, or the people who go on the journey.

So here are some example sentences:

1. Lewis and Clark went on an expedition to explore newly acquired land in America.

2. A group of people went hiking through the forest on an expedition to find a rare bird.

Hope I helped!

- Amber
Our expedition was joyful, but long. The expedition was terrible, it wouldn't stop raining.