Question

why Gandhiji decided to launch Satyagraha against the Rowlatt Act 1919​

Answer 1

He decided to launch satyagrah because the rowlatt act gave the police enormous power to arrest a person without any warrant.

Also, it suspended the rights of Habeas Corpus and includes trial in seclusion.

Gandhiji regarded it as stealing the rights if individuals

Answer 2

Mahatma Gandhi decided to launch a satyagraha against Rowlatt Act because: 

1. Indian members had completely opposed the Rowlatt Act that was by the Imperial Legislative Council in a hurry 

2. The Act gave the government the power to repress political activities and detain political prisoners without a trial for two years. 

3. Gandhi wanted to begin a non-violent civil disobedience movement against this law because it was completely unjust.

Hope this will help you ^_^