The ghettos weren't specifically built to be ghettos in world war 2. They were neighborhoods that were "repurposed" to segregate the Jewish communities (for the most part). There were several types of ghettos, closed, open, and destruction. For example, in Warsaw they built walls around existing homes and streets and forced the Jewish people into the blocked off area.
About a year.
five
how long does it take to build a asimo
1 hour
everything
how long did it take to build the half moon
how long did it take to build the scottish parliment?
how long did it take to build cabot tower
hs2 will take 15 years to build
4 years each
how long does it take to build a beam bridge of 2400 sq ft
This was also known as the Warsaw Ghetto Uprising, they weren't moving the Jewish people to the Ghettos, they were trying to take them out and put them into a concentration camp.