The answer is actually Complex drainage systems to keep structures from flooding.
The correct Answer will be Either B or C
We need a picture of the explanation to answer this question
Without food people became malnourished therefore a decrease of population due to famine so no births and productivity since people were too weak to work.
Orginally known as the Boycott Movement was a British organization that was at the centre of the international movement opposing the South African apartheid system and supporting South Africa's non white population.. hoped this helped.
