Britain creates the colony of the Federated Malay States—a federation of four protected states in the Malay Peninsula—Selangor, Perak, Negeri Sembilan and Pahang—in 1895; rubber plantations are established and tin mining begins.

In 1873, the British had intervened militarily in a civil war in Sungai Ujong to preserve British economic interests, and placed the country under the control of a British Resident.

Jelebu followed in 1886, and the remaining states in 1895.

When the Federated Malay States (FMS) is established, Sungai Ujong and Jelebu are reunited to the confederation of small states and the whole, under the old name of the Negeri Sembilan, is placed under a single Resident and becomes a member of the FMS.