What major event in human history would have led to a global increase in co2 emissions?

Industrial Revolution

Explanation:

The Industrial Revolution was one of the greatest changes in the history of humanity, and one that had a significant impact on the environment as well. The Industrial Revolution refers to a social and economic wave of change that began in Great Britain sometime between 1760-1840.

During these years, industrial production increased substantially, which led to the establishment of factories in urban areas. It also led to the development of machines and an unprecedented population growth. One of the most significant elements of this process was an increased reliance on coal for industry, which led to an increase in CO2 emissions globally, a trend that continues in the present and that is linked to climate change.