How strictly was the ban against enslaving Muslims
observed in Hausaland?

The ban against enslaving Muslims was observed very strictly in Hausaland in many ways. For example. if a non-believer would become a Islamic so called "believer", he would no longer would be someone's possession (slave). This is somewhat illogical because anyone could say that they are a Muslim just to become a free man or woman.

Explanation:

I majored in History

mount st. helens in washington erupts, causing a massive avalanche and killing 57 people on this day in 1980. ash from the volcanic eruption fell as far away as minnesota. seismic activity at mount st. helens, which is 96 miles south of seattle, began on march 16.