기본적인 문장 몇문장만 해석 부탁드립니다.

1. no one - not the french and not the americans- knew just how big the louisiana territory was.

2. it took meriwether lewis and william clark months to get ready for the trip west.

3. each ofthe 30-or-so men chosen brought special skills to the group.

4. the first leg took them up the missouri river.