Summarize the recent changes in the structure of the French tourism federations, including the name of the new unified entity and the date it was formed. Additionally, explain the purpose of the 'Accès adhérent' link on the page.
Navigate to the main page of offices-de-tourisme-de-france.org. Locate information regarding the merger of historical tourism federations. Identify the name of the new single entity formed by this merger. Find the exact date when this merger took place. Determine the purpose of the 'Accès adhérent' link. Synthesize the identified information into a concise answer.
State that three historical federations (Offices de Tourisme de France, Tourisme & Territoires, and Destination Régions) merged. Identify 'ADN Tourisme' as the name of the new single entity. State the merger date as 'March 11, 2020' or '11 mars 2020'. Explain that the 'Accès adhérent' link provides access for members (adhérents) to an intranet or member-specific area.