In countries like China and India, parents indicate their preference for male over female children by selective abortions (allowed by pre-natal screening), which abort a disproportionate number of female fetuses.
Parents or other adults may feel that way in any country. But in nations like the United States, people would be unwilling to admit to such feelings because they are considered "politically incorrect." Certainly, few serious politicians in those countries would advocate discriminatory gender policies.
Yet gender discrimination is considered acceptable in other countries, including the ones I've named, and perhaps parts of Italy or Spain. Why would it be true in this group of countries and not the other group. Is it the result of "tradition" or "custom?" Do most European countries have political philosophies such as the Enlightenment or the "Rights of Man" that head off gender discrimination? Or do certain forms of government, (e.g. democracy) tend to discourage gender discrimination while others (e.g. monarchy) favor it?