Why coal historically replaced wood as a fuel source?

Coal historically replaced wood as a fuel source primarily due to its higher energy density, which allowed for more efficient heating and energy production. As industrialization progressed, the demand for energy surged, and coal's abundance and ease of extraction made it a more viable option than dwindling wood supplies. Additionally, coal burns longer and produces less ash, making it more convenient for large-scale use in factories and railways. This transition was further driven by advancements in technology that facilitated coal mining and utilization.