The correct answer is A. Salt mines in the Sahara desert
Salt was extremely important at that time and was even used as currency often because it was expensive.
I think it was called the slave triangle..
sorry not certain
1. The fact that all Incan architecture shares similar design principles suggests C. unity. - they all wanted to be the same because they were a union
2. The towers of St. Basil's Cathedral in Russia are symbolic of C. eight battles.
3. The Greek arch can typically be seen in all of these, but let's say A. bridges.
