The bessemer process was important in great britain's industrial revolution because it

The primary reason it was so important was it was the first time someone had come up with an inexpensive way to manufacture mass quantities of steel.

It was important because it enabled countries to make steel cheaply and this was then used to make better tools and better machinery and it enabled the industry to prosper. This forced them to become imperialistic in order to get more resources to increase the scope of the revolution even more.