Answer:
June 19: China retaliates, threatening its own tariffs on $50 billion of U.S. goods, and stating that the United States had launched a trade war. Import and export markets in a number of nations feared the tariffs would disrupt supply chains which could "ripple around the globe.A trade war is an economic conflict resulting from extreme protectionism in which states raise or create tariffs or other trade barriers against each other in response to trade barriers created by the other party. Increased protection causes both nations' output compositions to move towards their autarky position.
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