1. to spread; to extend; to expand; to enlarge; to widen; to broaden
もっと範囲を広げてください！Please broaden the scope further!
2. to unfold; to open; to unroll; to unwrap
occ. written 展げる
彼女はそう言ってから、手紙を広げて、内容を確認する。After saying that, she unfolds the letter and checks its contents.
3. to scatter about; to spread around
机いっぱいに資料を広げた。I spread documents all over the desk.
4. to make flourish; to cause to prosper