One of the main reasons that the Three Gorges dam was built was to prevent flooding further downstream. The need for a dam was highlighted in 1954 when people were killed as a result of flooding of the Yangtze River.
Arab Spring refers to the democratic uprisings that arose independently and spread across the Arab world in 2011. The movement originated in Tunisia in December 2010 and quickly took hold in Egypt, Libya, Syria, Yemen, Bahrain, Saudi Arabia, and Jordan.
(March 2017) The Indian independence movement was a movement from 1857 (in many cases, even pre-dating 1857) until 15 August 1947, when India got independence from the British Raj. The movement involved many political and social organizations and armed and unarmed struggle.