What happened in 2014 that made the ongoing civil war in Syria even more complicated?%0D%0A%0D%0A(1 point)%0D%0AResponses%0D%0A%0D%0AThe Arab Spring led to demonstrations in Syria.%0D%0A%0D%0AThe Arab Spring led to demonstrations in Syria.%0D%0A%0D%0AThe Assad government used chemical weapons.%0D%0A%0D%0AThe Assad government used chemical weapons.%0D%0A%0D%0AISIS launched an attack on Syria.%0D%0A%0D%0AISIS launched an attack on Syria.%0D%0A%0D%0AThe United States attacked a Syrian air base.%0D%0A%0D%0AThe United States attacked a Syrian air base.
