Transform boundaries can be a 'fault',which is a broken down rock formation.The San Andreas fault could be an example.
Because it was a very unexpected event and they didnt have the tech to forecast it
Droughts is your answer because flooded their dam by destroying it and put malaria in the water which flooded.
The answers are B and also C.
The effect that the silk road had on trade was massive; The Silk road brought people far across Asia and Europe bringing different aspects of their culture with them.
