Ache of a sort• Attack of remorse• Bit of distress• Bit of guilt• Bit of guilt, say<span>• Brief pain.
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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.
<span>The number of live births per 1,000 people in a year is known as the Crude birth rate!
This link might help you for other questions on this subject!
</span>https://quizlet.com/27830079/chapter-7-flash-cards/
Hope I helped! Please put brainiest! <3
"The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago, to the beginning of the Devonian Period, 419.2 Mya.<span> <span>Wikipedia."
https://www.google.com/search?q=He+Silurian+period+occurred&rlz=1C1RUCY_enUS760US760&oq=He+Silurian+...
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