What led to the destruction of the great friday mosque in jenné in the early nineteenth century?

(c)The new ruler Seku Amadu wanted to make it more modern mosques.

Seku Amadu appears to have disapproved of the existing mosque and allowed it to fall into disrepair.This would have been the building that Caillié saw. Seku Amadu had also closed all the small neighbourhood mosques.Between 1834 and 1836, Seku Amadu built a new mosque to the east of the existing mosque on the site of the former palace. The new mosque was a large, low building lacking any towers or ornamentation.

the catholic church withhold people's access to the bible during the middle ages.

people could go to church and listen to the teachings, but it was absolutely forbidden to own and/or read the books of both the old and new testaments. it was also prohibited to translate the books (which where originally in biblical hebrew) to any other language.

this was done so the church could remain in control of what their teachings were and to enhance their importance and power, while also being able to judge people's actions through information that was unavailable for the general public.