What were the dangers of crossing the Sahara ?

One danger of crossing the Sahara is the extreme amount of heat and there is little food or water.

Explanation:

Migrants traversing the Sahara get stranded in the desert because they are abandoned by smugglers and left in the excruciating heat, with little food or water. According to the IOM, smugglers use increasingly dangerous and often times deadly routes.

why was the national assembly formed by the third estate?

the estates-general had not been assembled since 1614, and its deputies drew up long lists of grievances and called for sweeping political and social reforms. the third estate, which had the most representatives, declared itself the national assembly and took an oath to force a new constitution on the king.