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.
The idea for an economic union of the Maghreb began with the independence of Tunisia and Morocco in 1956. However, it took over 30 years before the concept took hold. The Arab Maghreb Union was created in February 1989 with the intention of creating economic and political unity between the Maghrebi states.