If the cause of the legal action occurred in the state, would a court in that state have personal jurisdiction?
The “cause of action” basically means the reason that you are suing someone. If the cause of action happened in the state where you are trying to get personal jurisdiction over the other party, this is one way for the court to get personal jurisdiction. For example, let’s say you live in Virginia and your partner lives in Florida. If your partner assaulted you in Virginia while visiting you, then Virginia would have jurisdiction over you and your out of state partner to hear a court case related to that assault.