The four main causes were: militarism, alliances, imperialism and nationalism - or as an acronym, M-A-I-N (this made it much easier for me to remember the causes)
Most slaves lived on plantations, but the plantations were not very big: they rarely had more than 100 slaves. The best answer is then A. lived on plantations with 20 or more slaves.
A is correct industrialized nations have a responsible to promote development in poor countries
The <span>name given to the British practice of taking americans sailors from their ships and forcing them to serve in the British army was "impressment," since the British were "pressing" the Americans into service. </span>
