单选题：10～l4世纪中国历史发展进程的特点包括（　　）。①若干民族政权并立，逐渐统一②民族融合进一步加强③封建生产方式逐渐向边

题目内容：

10～l4世纪中国历史发展进程的特点包括（　　）。
①若干民族政权并立，逐渐统一②民族融合进一步加强
③封建生产方式逐渐向边疆地区扩展④经济重心继续南移并最后完成 A．①②③
B．②③④
C．①②④
D．①②③④

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