What city sat right in the middle of the caravan routes, and collected gold taxes as the caravans went in and out?
The empire of Ghana and the main stop was the capital Koumbi and it collected the money.

Where did the trade route start?
it started in Sidjimass.

What was good about being a merchant?
you made a lot of money, got plenty of salt and gold.

What were the cons of being a merchant
you have to make a long, sometimes tough journey through the dessert.

Q:What were the three main pit stops of trade on the route?
2. Taghaza
3. Wangara

The two biggest things traded on the route were gold and salt.

how did people get across the desert? They got around by Camel also know as "the ships of the dessert" Also they traveled in camel caravans,