Mogadishu. ??

No, but you're (obviously) on the right continent

stone city?

Here you go...I came across this picture by chance, but thought it was too beautiful to not use.

Morocco ??

Khartoum?

LaoPo

Nope...Croc, by "Stone City" did you mean Zanzibar?

stone city?

I meant Stone Town

Austhaied is the closest geographically, btw.

Nouakchott - Mauritania?

hmmm...maybe Dakar.

LaoPo

Nope...but for what it's worth, they're both about equally as close to the city in the picture

tangier ??

Dar Es Salaam

Nope...and lamphun is going much further away...and you guys are correct in picking cities with slave trade associations, this particular city was founded by returned slaves from a country where you tend to see the same kind of highly colorful buildings

Monrovia ?

No...

Bamako , Mali ?

Nope...here's another hint: think small.

Freetown?

No.

Laayoune, Western Sahara. ???

Banjul - Gambia

LaoPo

Nope...Freetown is the closest yet and Gambia is closest in terms of size (this country is somewhat bigger than that).

Bissau

Conakry, Guinea ??

Nope...Austhaied, you're closer still, just a couple of countries or so away

cote d'ivoire (ivory coast) ?? Grand Bassam ??

Lome - Togo....

LaoPo

Nope, but LaoPo is veeery close

Malabo

Porto-Novo, Benin...or close-next-door Cotonou...

LaoPo