Gender inequality means different levels of protection of human rights according to gender. No need to say which of the two gender’s rights are usually violated more or protected less rigorously. Gender inequality occurs in many areas of life:
- in political representation or participation
- in income or labor market participation
- in labor sorting (when women are relegated to certain professions)
- in family life (when women do not have the same marriage or divorce rights, inheritance rights etc.)
- in criminal justice (when the testimony of women is considered less valuable) etc.
Too many areas to mention, unfortunately.
When you read about the causes of gender inequality, the usual suspects are religion, patriarchy and all sorts of anti-women prejudice. A different and interesting perspective, focused on inequality in the labor market, is the following:
Ester Boserup … argues that gender role differences have their origins in different forms of agriculture practiced traditionally. In particular, she identifies important differences between shifting and plough cultivation. The former, which uses hand-held tools like the hoe and the digging stick, is labor intensive and women actively participate in farm work. The latter, in contrast, is more capital intensive, using the plough to prepare the soil. Unlike the hoe or digging stick, the plough requires significant upper body strength, grip strength, and burst of power, which are needed to either pull the plough or control the animal that pulls it.
Because of these requirements, when plough agriculture is practiced, men have an advantage in farming relative to women. Also reinforcing this gender-bias in ability is the fact that when the plough is used, there is less need for weeding, a task typically undertaken by women and children. In addition, child-care, a task almost universally performed by women, is most compatible with activities that can be stopped and resumed easily and do not put children in danger. These are characteristics that are satisfied for hoe agriculture, but not for plough agriculture since large animals are typically used to pull the plough. …
[T]his division of labor then generated norms about the appropriate role of women in society. Societies characterized by plough agriculture, and a resulting gender-based division of labor, developed the belief that the natural place for women is within the home. These cultural beliefs tend to persist even if the economy moves out of agriculture, affecting the participation of women in activities performed outside of the home, such as market employment, entrepreneurship, and participation in politics. (source)
And there does seem to be a strong statistical correlation between historical plough use and prejudice against women.