Which of the following explains why historian a mentions the issue of slavery while historian b does not

Why was it difficult fpr unions to succeed in the 1800s

Type the corect answer in the box.there were many causes of the enlightenment. however, a particular revolution played an important role in its development. this revolution was a result of discoveries made by scientists such as isaac newton and galileo galilei. they dug deep into the realms of science to discover new laws of physics and decipher the mysteries of the universe. the revolution refuted the claims of the catholic church about the position of earth in the solar system.this revolution is called what?

What were the effects of the great reform act of 1832?