What was the greatest impact of social media on the revolution that followed the iranian presidential election of 2009?

Social media played the great and protesting role in the 2009 presidential election

Explanation:

Social media plays very influential and interactive role in every event. Social media played the instrumental role in organizing protest and rallies in the 2009 Iranian election. Videos, photos and protesting texts were sent on the internet.

With the help of these medium, people gather to do protests and rallies and exchanged information to each other. While through these platforms, people also tried to spread the positive attitude about their political leader among the citizens.  

the right answer is the constitution

b) almost one million irish people died during the potato famine.