In Italy we use the normal caravan lead and sometimes a 2 pin connector. We always carry a tester to plug into a three pin in the caravan to check polarity.
Cannot speak for France as we do not go there. But other countries we visit are Belgium, Germany, Austria, Poland, Slovakia, Czech Republic and Hungary which we use the same as Italy. We carry a small lead with 2 pin one end that fits into the normal UK caravan lead.