Answer:
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<span>There are six if we do not count Kosovo.</span>
All of them were river valley based civilization remains, thought we have many cities we have many cities in uneven terrains and arid regions , which may either have been outposts for trade, or were well used with water harvesting techniques to use the little available water through the rains . Created artifacts indentify as “art”, religion and priestly class that maintained rituals and douctrines
Where r the options ??????????
Magnesium<span> is a metal at </span>room temperature all metals except for mercury aresolids and f<span>ew metals have fairly low melting points for example Gallium. </span>