Arguably the main difficulty in maintaining the large land empire of Russia was a "<span>C. lack of industrialization," since this made it nearly impossible for Russia to "catch up" with the West. </span>
bondage, enslavement, servitude,
thralldom, thrall, serfdom, vassalage
"thousands were sold into slavery"
An American solider and statesman who served as the seventh President of the United States from 1829 to 1837.