The southern part, because the altitude increases as you go south in Egypt and leads into the Ethiopian highlands
River System........................
Please appreciate how I just wasted like 1 hour and 30 minutes of my life for only 8 points. I like to be organized and such so I put them all in order thanks to google maps! But here ya go! Hope this Helps. (Tip: Just use google maps and look at north american countries and such)
Antigua and Barbuda
Bahamas
Barbados
Belize
Botswana
Burundi
Cameroon
Canada
Cook Islands
Dominica
Eswatini
Fiji
The Gambia
Ghana
Grenada
Guyana
India
Ireland
Jamaica
Kenya
Kiribati
Lesotho
Liberia
Malawi
Malta
Marshall Islands
Mauritius
Federated States of Micronesia
Namibia
Nauru
Nigeria
Niue
Pakistan
Palau
Papua New Guinea
Philippines
Rwanda
Saint Kitts and Nevis
Saint Lucia
Saint Vincent and the Grenadines
Samoa
Seychelles
Sierra Leone
Singapore
Solomon Islands
South Africa
South Sudan
Sudan
Tanzania
Tonga
Trinidad and Tobago
Tuvalu
Uganda
Vanuatu
Zambia
Zimbabwe
