The development of new manufacturing processes, power sources and machinery led to which of the following? O A. Development of the factory system. OB. Increase of farming as an occupation. O C. More people staying in small villages. OD. Expansion of the cottage industry.

A. Development of the factory system

Explanation:

The methods of production in factory system replaces Human labors with the use of Machines. Typically, the Machines were faster, can be operated on longer hours, and more cost efficient compared to human labors.

Ever since the industrial revolution in, late 1700s, Factory system started to become the most preferred methods for business owners regardless of the environmental waste that they created.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals

it should be d or b but i'm sure it's d