"Political upheaval" refers to a situation where there are sudden and significant changes in the political system of a country. It could involve widespread protests, revolutions, or the overthrow of a government. Full definition
Emerging at a time of political upheaval in France, Klein was not only a pioneer of conceptual art, but also a ground - breaking exponent of performance art, taking part in several high risk events. (visual-arts-cork.com)
A host of reports from Madagascar indicate that environmental turmoil, including raids on parks for rosewood, is rising in the wake of political upheaval in that remarkable island nation, which is home to hundreds of extraordinary animal and plant species. (dotearth.blogs.nytimes.com)
Those countries will be beset by political upheaval for years. (canadianbusiness.com)