Upper Afghanistan (dark blue)
Lower Afghanistan (light blue)
Also I extended Saudi to include that open space.
They were united until 1316, when Persia Major attacked, and separated them into two states in Persia Major. In 1337, they became independent once more in a war with Persia. Persia held onto Upper Afghanistan until 1339, when it gained independence from Persia. In 1340, Persia regained control over a small part of Upper Afghanistan, which is still part of Persia Major today.