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 countries fly flags, and other questions about countries countries fly flags, and other questions about people and places / I wonder why penguins can't fly：and other questions about polar lands Other title：I wonder why countries fly flags, and other questions about countries I wonder why the sun rises :and other questions about time and seasons I wonder why castles had moats :and other questions about long ago I wonder why the sun rises and other questions about time and seasons I wonder why the sun rises：and other questions about time and seasons