What did the “Domino Theory” suggest about South East Asia?

What motivated germany to make an alliance with austria-hungary?   a.  fear of aggression from the united states      b.  fear of aggression from france      c.  the desire to invade russia      d.  fear of aggression from england

Which statement describes a similarity between the great migration and to this day

The date a source was created is considered part of its historical context intended audience purpose point of view