65.78% of the water is is frozen at the poles.
Answer:
<u><em>River valley civilizations</em></u>
Explanation:
They were centred around various river valleys as their main source of livelihood and the flourished only due tiote river valley on which they were based. Like the harappan in Indus Valley, The yellow river (Huang He), the Mesopotamia around Tigris and Euphrates and the egyptian Nile.
It is true, countries like Kosovo and Bosnia-Herzegovina can be put under this category despite not having a coastline on the Mediterranean.
