What is the Arab spring? When it started and what countries it involved?

The Arab Spring (Arabic: الربيع العربي‎) was a series of anti-government protests, uprisings, and armed rebellions that spread across much of the Arab world in the early 2010s. It began in response to oppressive regimes and a low standard of living, starting with protests in Tunisia (Noueihed, 2011; Maleki, 2011).[1][2] The protests then spread to five other countries: Libya, Egypt, Yemen, Syria and Bahrain, where either the regime was toppled or major uprisings and social violence occurred, including riots, civil wars or insurgencies.