What are some things that require a ticket? like a bus or plane?

Which of the following items would serve as a primary source for a historian studiying the american civil war

Arecent challenge to the european union created by a member state is?

Which of these would be describing a developed country? a) literacy rate of 84% b) life expectancy of 58 years c) post-secondary education rate of 10% d) infant mortality rate of 3 per 1,000 births