The Federated Malay States was a federation of four states on the Malay Peninsula - Pahang, Perak, Selangor, and Negeri Sembilan - established by the British government in 1895, and lasted until 1946, when they were joined to the Straits Settlements and the Unfederated Malay States in the Malayan Union, then Federation of Malaya and later Malaysia.
Britain was responsible for foreign affairs and defence, whilst the states continued to be responsible for their domestic policies. Even so, the British Resident General would give advice on domestic issues, and the states were bound by treaty to follow that advice.
Postage stamps
While the four states issued their own postage stamps as before, there were additional issues for the Federated States as a whole.
See also