Two extermination camps (not ordinary concentration camps) were closed after revolts: Treblinka and Sobibor.
The key distinction was between extermination camps and labour camps ("ordinary" concentration camps).
Hannah never actually went to a concentration camp. She was sent to two camps, but they weren't concentration camps.
Yes , the two genders were separated into different concentration camps .
Dachau and Auschwitz
Auschwitz-Birkenau
The key disinction is between 'ordinary' concentration camps (such as Dachau or Buchenwald) and extermination camps such as Treblinka and Sobibor. The sole purpose of extermination camps was to kill. Note that Auschwitz and Majdanek combined both kinds of camps.
Here are the name of the Major Concentrations in Poland during the Holocaust:AuschwitzBelzecChelmnoMajdanekSobiborWarsaw
I think because of the Holocaust, most of the concentration camps were in Europe.
Dachau, the first concentration camp, opened on 22 March 1933 - less than two months after Hitler came to power. In April 1933 small concentration camps sprang up in all kinds of places, but most these were later closed by mid 1934. From 1937 additional camps were built, starting with Buchenwald.
It's common to draw a distinction between 'ordinary' concentration camps like Dachau and Buchenwald, and extermination camps. The latter existed only for the purpose of killing. They are:Auschwitz II (Birkenau section)BelzecChelmnoMajdanek (part only)SobiborTreblinka IIIn addition, there were transit camps and various 'specialized' camps.
She was in one transit camp - Westerbork - and two concentration camps: Auschwitz and Bergen-Belsen.
Please see the related question.