Ibn Saud was now the undisputed ruler of central Arabia. By force of arms, by political acuity and by judicious marriage, he had welded together the tribes of central Arabia and laid the foundations of a Kingdom. In recognition of his achievement and of the reality of his power, the sheikhs and the religious leaders of the region, with Ibn Saud's father at their head, proclaimed him Sultan and Imam of Nejd at a public ceremony in Riyadh.