They only met once a year!
Simple answer irrigation system.
Want more information use this source:
https://en.m.wikipedia.org/wiki/Neolithic_Revolution
<span>The nation that was invaded by the Soviet Union in the late 1970's was Afghanistan. Near the very end of December of 1979, thousands of Soviet Union troops arrived in Afghanistan. They quickly took complete control of the nation through military action and were able to politically control Kabul as well as other large parts of the country.</span>
Answer:
A. Relevant information
Explanation:
relevant means something that is related to the topic or issue
