After world war i, britain formed iraq as a protectorate and then used the jordan river to divide the rest of its protectorate into

After world war i, britain formed iraq as a protectorate and then used the jordan river to divide the rest of its protectorate into  palestine and transjordan due to fact that transjordan was msotly inhabitated by arabic people and palestine region by jewish majority which was growing each year

They live in a demilitarized border