Which country east of cambodia has the interesting distinction of being the only country in southeast asia to never have been taken over by a european power

One way in which the european union encourages trade among countries is through the use of

From where do ocean waves obtain their energy

Which of the following  bestillustrates a negative reinforcer?               a.  copland gives up candy to stave off chronic acid indigestion.    b.  nancy learns that she prefers chocolate over vanilla.    c.  carmine changes his major to english lit after failing a math exam.    d.  on a hot day, lindberg always drinks lemonade.