What do you call a Person who helps other people?

What year did lord and lady baden Powell make their first visit to Canada? Do you give a senior discount? How do you abbreviate volunteered? What is the abbreviation of charitable? What is the abbreviation for 'Chairman'? What is social enterprise? What was the secret network of people who helped African-Americans escape slavery? Where can I get information on nonprofit organizations in my area? Why do old people hate the word dude? Why were women often involved in both the abolition movement and the temperance movement? What group of people marched on Washington dc after world war 1? Are orphanages good? How are the badges sewn on sash? How can you treat the elderly as individuals? Where do major challenge in working toward unity of effort often comes from? Who is the patron saint of socializing? Is trio a pronoun? Is Leonardo decaprio a freemason? Where do you purchase an outdoor statue of St Mark for your church if you are researching your Eagle Scout Project? Where do senior citizens funding come from?

What do you call a Person who helps other people?