Because they were in hiding! Only a few people knew and if the Germans found out they were hiding there they would have to be sent to concentration camps. So it had to be secret.
A secret Annex is a secret hiding place -EXAMPLE (WHEN ANNE FRANK WAS IN HIDING HER FAMILY LIVED IN A ANNEX)
Becuase they were trying to hideout in a secret addition to a house
Tales from the Secret Annex was created in 1949.
The ISBN of Tales from the Secret Annex is 978-0553569834.
Tales from the Secret Annex has 160 pages.
Eight people lived in the secret annex.
The Van Daans joined the Franks in the secret annex in 1942.
Mr. Dussel moved into the secret annex in November 1942.
Achterhuis
Anne Frank's secret annex had two floors. It consisted of several rooms where Anne and her family lived in hiding during World War II.
july
Amsterdam, Holland.