France, May 27 -- Legislators in France's upper-house are preparing to inject nearly €4 billion into Mayotte as part of a sweeping plan to tackle the territory's deep-rooted social, economic, and security challenges.

The French Senate is poised to approve a landmark bill aimed at revitalising the overseas department of Mayotte, signalling a renewed commitment to a region grappling with multiple crises.

The draft programme bill, which sets out nearly €4 billion in State investment over the next seven years, marks what the government calls a "historic step" in the reconstruction and future development of the Indian Ocean archipelago.

More than five months after Cyclone Chido wreaked havoc on Mayotte, the government is seeking...