It stretches along both sides of the Irrawaddy from the north of Mandalay to Thayetmyo, and embraces the Lower Chindwin, Shwebo, Sagaing, Mandalay, Kyaukse, Meiktila, Yamethin, Myingyan, Magwe, Pakokku and Minbu districts.
On the 14th of November 1885 the British field force crossed the frontier, and advanced to Mandalay without incurring any serious resistance (see Burmese Wars).
Most of the Burmese amber is worked at Mandalay into rosary-beads and ear-cylinders.
There are other ruby mines at Nanyaseik in the Myitkyina district and at Sagyin in the Mandalay district, where the mining is by native methods under licence-fees of Rs.5 and Rs.10 a month.
In the Shan States there are a few open plateaus, fertile and well populated, and Maymyo in the Mandalay district, the hill-station to which in the hot weather the government of Burma migrates, stands in the Pyin-u-lwin plateauYsome 3500 ft.