Which country invented the safety light?

The safety light was invented in England. It is generally believed that Edison invented it now, but it is not. The real inventor was Henry Goebbels. The light bulb was invented as early as 1854, but unfortunately it was not patented at that time. Later, due to lack of funds, the technology was sold to Edison. After that, Edison continued his research, found a more suitable material for developing incandescent lamps, and gradually began to expand production and use, so it is also the most famous. The electric light was invent by Henry Goebbels.