Aṅguttarāpa
A country north of the river Mahī, evidently a part of Aṅga on the other side of that river (Aṅgā eva so janapado; Gaṅgāya [Mahāmahīgaṅgāya] pana yā uttarena āpo, tāsaṃ avidūrattā Uttarāpati vuccati) (SnA.ii.437).
It was here, in the village Āpaṇa, that the Buddha was staying when the Jaṭila Keniya came to see him; here also was taught the Sela Sutta (Sn.102 f). From Bhaddiya (in Aṅga), (DhA.i.384) the Buddha went to Aṅguttārapa and thence to Āpaṇa (Vin.i.243‑5; DhA.iii.363).
The country was probably rich because we find as many as 1,250 monks accompanying the Buddha on his tour (Sn.102 f).
Other suttas taught here are the Poṭaliya (M.i.359), and the Laṭukikopama (M.i.447).
Apaṇa seems to have been the chief township, because it is always mentioned in connection with Aṅguttarāpa.