what factor was most responsible for British leaders failure to pass laws addressing pollution and work place safety early in the industrial revolution?

Capitalism

Explanation:

Industrialization began in the late 18th century and early 19th century. It also gave rise to capitalism because it allowed the capitalist to invest, build industries and earn a profit. It changed society in many ways. Capitalism brought the competition in the market, which led to the growth of production in the industries without addressing pollution and workplace safety for the workers. London in the early 19th century lacked in drainage and sewerage system along with polluted air which caused diseases like typhus, tuberculosis, cholera and lung disease.

The answer is capitalism - Apex