B To maintain a standard of living
During the wars many men would go and fight risking their lives. This led to the households not making enough income so women also worked so their family could afford to having a decent standard of living.
The answer I believe is B.
Secondary schooling was primary installed as a way for students to be exposed to deeper understanding on the lessons that have been taken during their primary education. It was also designed so that students will be able to determine for themselves which skills they are good at and which skills they can improve.
During this time Europe was becoming more christian and christian's blamed the Jews for all of their problems
The purpose of the Berlin Conference of 1884-1885 was to put some order in the chaos of the colonization of Africa. It divided the continent up into specific areas for colonization.