7. Kung ang ilog Ti.g.r.i.s at ilog E.u.p.h.r.a.t.e.s. ay sa M.e.s.o.p.o.t.a.m.i.a., anong kabihasnan naman ang sa Ilog I.n.d.u.s? A.Kabihasnang M.e.s.o.p.o.t.a.m.i.a B.Kabihasnang tsina C. Kabihasnang I.n.d.u.s D. Kabihasnang E.g.y.p.t
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