All 4 contributed, but B and D are the most direct causes.
Answer:
i will help
Explanation: add a question and i will help
Answer:
A federal court will be scrutinizing one of the Nsa (National Security Agency’s) worst spying programs on Monday. The case has the potential to restore crucial privacy protections for the millions of Americans who use the internet to communicate with family, friends, and others overseas.
This was Horace Mann. He helped create and design the first educational system in the United States, he was the Massachusetts' Secretary of the Board of Education and he started the "Mann's Six Principles", which were his thoughts of how he would choose decisions. He did a lot for schooling and shaped it how it really is today.