Why was the dropping of the first atomic bomb at the Trinity Test Site considered a turning point in warfare?

i need to see the answer to answer the question

the industrial revolution pushed the world into modern industrialization. it changed the course of history profoundly. it caused rapid urbanization and pushed cities and countries into development. the industrial revolution began in great britain with a series with new inventions which led to the creation of machines and mass production.

this caused the country to gain wealth and money and become an international superpower. it improved transportation and manufacturing inside the country, pushed people to live in urban areas and britain to become the most powerful nation in the world for a while.

it should be a. song dynasty’s civil service examination system created an administrative bureaucracy manned by the landed aristocracy.

bias opinions and using a push pull