Other title：I wonder why countries fly flags, and other questions about countries I wonder why countries fly flags, and other questions about countries I wonder why countries fly flags ：and other questions about people and places I wonder why．countries fly flags, and other questions about people and places / I wonder why horses wear shoes and other questions about horses I wonder why ponies wear shoes：and other questions about horses I wonder why castles had moats :and other questions about long ago I wonder why trees have leaves and other questions about plants I wonder why．ponies wear shoes and other Questions about Horses I wonder why mountains have snow on top：and other questions about mountains