Answer:
The Velvet Revolution or Gentle Revolution was a non-violent transition of power in what was then Czechoslovakia, occurring from 17 November to 29 December 1989. Popular demonstrations against the one-party government of the Communist Party of Czechoslovakia included students and older dissidents.
Price changes send contrasting messages to consumers and producers about whether to enter or leave a market. Rising prices give a signal to consumers to reduce demand or withdraw from a market completely, and they give a signal to potential producers to enter a market.
Their readers can refer to other articles, or it can back up proof that they aren’t committing plagiarism.