Following the granting of the first concession in 1854, Lesseps was in near constant travel to assemble diplomatic approvals perceived as necessary to build the canal from other foreign governments involved. Although the first concession was granted by Egypt, at the time Egypt was an administrative subdivision of the Ottoman Empire, and so Lesseps traveled frequently to the Sublime Porte to make his case to the Grand Vizier of the sultan, Ali Pasha. The Ottoman Empire, although neutral to the idea, were greatly under the influence of the British at that time. Since Britain – through the policy of Lord Palmerston – was largely opposed to the canal project, and its citizens owned a potentially competing project in form of a railroad from Alexandria to Cairo, not to mention various merchant warehouses along the African sea route, Lesseps made several trips to Britain between 1854 and 1858 to persuade Palmerston and the British public. Lesseps also had to fight back against Robert Stephenson's and even Enfantin's expert opinions on the feasibility of the canal. Lesseps formed an organization of international engineers (the International Commission for the piercing of the isthmus of Suez) to again study the canal route in late 1855, and its results were released to the general public.