What industry was hurt the most by the spread of electricity and electric lighting? O the steel industry
the railroad industry
o the telegraph industry
o the natural gas industry

The answer is below

Explanation:

Rerum Novarum is an open letter written and distributed by Pope Leo XIII in 1891.

It has various effects on the Catholic Church, some of which are:

1. It encouraged the church to assist the poor and vulnerable people.

2. It established the idea that Church can speak out on social matters.

The effects of Rerum Novarum were positive. Some of which are:

1. It promotes work satisfaction

2. It promotes cooperation among different classes.

The effect of Rerum Novarum still affects us today as Churches continue to speak on social matters and encourage a good sociopolitical economy that benefits everybody regardless of classes.