I think it's D. or C
Hope this Helps
The Warring States period (481/403 BCE - 221 BCE) describes the three centuries when various rival Chinese states battled viciously for territorial advantage and dominance. Ultimately the Qin state was victorious and established the first unified Chinese state. Besides incessant warfare, and probably because of it, the period saw significant developments in society, commerce, agriculture, philosophy, and the arts, setting the foundations for the subsequent flourishing of Imperial China. Hope this helps. If dnt i'll try to edit and make the right answer. ;) bye
The answer is C. the soviet union faced serious economic and political problems.
