Question about The Striped Hyena & Spotted Hyena

Why aren’t Striped Hyenas Found Further South and West on the African Continent in the countries of Mozambiaque , Malawi , Zimbabwe , Eswatini , South Africa , Botswana , Namibia , Angola , Zambia , Democratic Republic Of The Congo , Republic Of The Congo , Gabon , Equatorial Guinea , Central African Republic , Liberia , Sierra Leone , Guinea , Guinea - Bissau , and The Gambia ?

They Coexist with Spotted Hyenas in the countries of Tanzania , Burundi , Rwanda , Uganda , Kenya , Somalia , Djibouti , Eritrea , Ethiopia , South Sudan , Sudan , Chad , Cameroon , Niger , Nigeria , Togo , Ghana , Benin , Burkina Faso , Mali , Senegal , and Extreme Southern Mauritania along the Senegal River.

So what’s stopping Striped Hyenas from coexisting with Spotted Hyenas in those other countries ?

I will attach both species range maps in comments