Final answer:
Louis Pasteur saved the French wine industry in 1863 by developing the process of pasteurization to kill harmful microorganisms and prevent spoilage.
Step-by-step explanation:
In 1863, the French wine industry was saved by Louis Pasteur. Pasteur, a French chemist and microbiologist, discovered that many wines were spoiling due to the presence of harmful microorganisms. He developed a process called pasteurization, which involved heating the wine to a specific temperature to kill these microorganisms and prevent spoilage. This breakthrough saved the French wine industry by ensuring the quality and longevity of their wines.
Learn more about Louis Pasteur and the French wine industry