Question

The development of socialsim was a reaction to

Answer 1

While we can see some thinkers arguing for what might be called a proto-socialist society prior to the Industrial Revolution, it was really this worldwide historical development that led to socialism's rise. Socialism was a reaction to the inequalities that grew as a direct result of industrial growth

Answer 2

The development of socialism was a reaction to the inequalties that were a direct result of the Industral Revolution.