What event in 1911 focused attention on the need to protect factory workers

I believe the answer is: The Triangle Shirtwaist Factory fire

The Triangle Shirtwaist Factory fire was regarded as the deadliest industrial disaster in history, which caused almost 150 deaths of factory workers. In response to this accident, government create list of regulations that the employers must follow in their workplace as safety regulations for their workers.

answer: this is because archeologists keep finding artefacts and ancient ruins dated more than 10000 to 15000 years, date around scientists said humans discovered language; which is at least mysterious as scientists always have said that is necessary to have a language to have architecture and some basic maths.

explanation: brainlest

i would say it is a and b.

hope this