Boats in the ocean and chart plotting
Answer:
Trans-Saharan trade requires travel across the Sahara between sub-Saharan Africa and North Africa. While existing from prehistoric times, the peak of trade extended from the 8th century until the early 17th century. The Sahara once had a very different environment
The famous book he wrote was mein kempf it was during the time when he was in jail he wrote about what he felt and what he wanted to do.