Climate change and the wine industry

I've tried to answer the qustions before the class.
1, Why was wine so important to the Greeks and Romans?
For the Greeks and Romans, wine was an important trade resource and it able to expand their Empire through spreading their advanced knowledge of wine making and grape cultivation around Europe and surrounding areas.
2. what kimd of weather negatively affected wine grape crops in 2017?
Lower temperature than usual in Soring, severe weather condition such as drought and storms had led to the wine grape losses and the shortage of wine.