Please help i’ll mark brainlist

Which of the following is an effect that constantine's conversion to christianity had on the roman empire?

Did the both the us and ussr have atomic weapons after 1949

All of the following changes typically happened in colonies as a result of imperialism, except: a. cultural practices were outlawed. b. they became more economically self-sufficient. c. european nations built modern infrastructure, including railways. d. the european language became the language of government and education.