In May 1940, Germany invaded the Netherlands, and the occupation government began to persecute Jews by the implementation of restrictive and discriminatory laws; mandatory registration and segregation soon followed. The Frank sisters were excelling in their studies and had many friends, but with the introduction of a decree that Jewish children could attend only Jewish schools, they were enrolled at the Jewish Lyceum. Anne became a friend ofJacqueline van Maarsen in the Lyceum.[11] In April 1941 Otto Frank took action to prevent Pectacon from being confiscated as a Jewish-owned business. He transferred his shares in Pectacon to Johannes Kleiman and resigned as director. The company was liquidated and all assets transferred to Gies and Company, headed by Jan Gies. In December 1941 Frank followed a similar process to save Opekta. The businesses continued with little obvious change and their survival allowed Frank to earn a minimal income, but sufficient to provide for his family
The Frank family moved from Germany to Amsterdam in 1933, the year the Nazis gained control over Germany. By the beginning of 1940, they were trapped in Amsterdam by the Nazi occupation of the Netherlands. As persecutions of the Jewish population increased in July 1942, the family went into hiding in the hidden rooms of Anne's father, Otto Frank's, office building. After two years, the group was betrayed and transported to concentration camps. Anne Frank and her sister, Margot, were eventually transferred to the Bergen-Belsen concentration camp, where they both died of typhus in March 1945.