Which god's festival was the cause for developing dramatic performances?

Dionysus is the god whose festivals were the cause for developing dramatic performances. 
Dionysus, in Greek mythology, is a god of celebration and wine. Many poems and songs were created in his name, and from those poems and songs, first plays were created. So the plays you know today were all created thanks to the ancient Greek belief in various gods.

Asuffragette was a member of militant women's organisations in the early 20th century who, under the banner "votes for women", fought for the right to vote in public elections, known as women's suffrage.