Why did direct democracy work for the ancient greek city of athens?

athens had a senate.
athens had a president.
athens had literate citizens.
athens had a small population.

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

The north was victorious in the battle of bull run true or false

The soviet union and the united states believed in two very different economic systems. what were the names of each?