Women being forced to leave part of their father’s property to their brothers is often rooted in traditional and patriarchal norms that prioritize male inheritance. Historically, many societies have viewed men as the primary breadwinners and women as dependents, resulting in property rights favoring males.

1. **Patriarchal Inheritance Systems**: In many cultures, inheritance laws and customs are designed to keep property within the male lineage. This system assumes that men will continue the family name and provide for their extended families, whereas women, upon marriage, are expected to become part of their husband’s family.

2. **Economic Dependency**: Traditional roles often render women economically dependent on male relatives. By limiting women’s inheritance rights, these customs perpetuate economic dependency and undermine women’s financial independence.

3. **Social Norms and Customs**: Cultural and social norms often discourage women from claiming their inheritance to maintain family harmony and uphold societal expectations. Women may face pressure from their families and communities to forgo their legal rights in favor of their brothers.

4. **Legal Disparities**: In some regions, laws themselves may still favor male inheritance, despite changes towards gender equality in other areas of society. Even where laws have been reformed, enforcement and social acceptance lag behind.

Addressing these issues requires comprehensive legal reforms, public awareness, and cultural shifts to ensure women’s equal rights to inheritance and economic independence.