Final answer:
Denmark was the first country to introduce a fat tax in 2011, which targeted foods with high fat content to address health concerns, but the tax was repealed in 2012.
Step-by-step explanation:
The country that became the first to introduce a "fat tax" in 2011 but subsequently withdrew this surtax on higher fat foods in 2012 was Denmark. While this initiative was aimed at curbing unhealthy eating habits and combating obesity, the tax ultimately faced criticism and was abolished after a year. This fat tax was part of a global trend to regulate foods with high trans fat content, with other jurisdictions taking similar measures. For instance, Canada's Calgary banned trans fats from restaurants and fast food chains in 2008, and California followed suit with bans starting in 2010 for restaurant products and 2011 for all retail baked goods. The U.S. FDA required that trans fat information be listed on Nutrition Facts panels from 2006 to help consumers be more aware of their intake, leading the food industry to replace partially hydrogenated oils mostly with palm and coconut oils. Eventually, the FDA determined trans fats to be unsafe and mandated their removal from the U.S. food supply by 2021.