It was "Alexander I" who was the Russian Tsar who refused to surrender to Napoleon in 1812, even after Moscow had been captured and burned, since he suspected (correctly) that Napoleon's army would not be able to endure.
The government outlawed slavery in 1981 and made it a crime in 2007. Estimates of the percentage of slaves vary from 10% to 20% of Mauritanian population.
C
Explanation
Peaceful unions" had the right to negotiate labor contracts with employers.
