I'm single parent never been married Traveling to kuwit need proff of custudy.What do need?

I'M SINGLE PARENT NEVER BEEN MARRIED AND I'M TAKING MY CHILD TO KUWAIT & THEY ARE ASKING FOR PROOF OF CUSTUDY, WHAT DO I NEED AND WHERE TO I GO FOR IT? ALOS I NEED A DOCMENT TO SAY IV'E NEVER BEEN MARRIED ? WHAT DO I NEED & WHERE DO I GET IT FROM? PLEASE ANY ONE TELL ME. THANX FOR READING THIS