The founding fathers believed that the government should be formed to protect all citizen's rights and not just the higher class rights.
Outlawed slavery in the territory
The treaty of versailles declared Germany guilty of aggression.
Germany was forced to pay 33 billion dollars and many parts of it like Alsace lorraine, coal mine at Saar were given to France.
Moreover it had to supply huge amounts of coal to Belgium and Italy as well.
Its army,navy and ships were reduced.
In short, it had to take over the blame and responsibility of the World War1
They traded through the trade routes around the Red Sea and traded.