Final answer:
Rates of male-male non-relative killings may vary more between times and places than rates of other sorts of homicides due to cultural norms, societal expectations, and socioeconomic factors.
Step-by-step explanation:
Rates of male-male non-relative killings may vary more between times and places than rates of other sorts of homicides due to various factors. One factor could be cultural norms and societal expectations surrounding masculinity. In some societies, male violence may be more tolerated or even glorified, leading to higher rates of male-male killings. Additionally, certain socioeconomic factors such as poverty, inequality, and lack of opportunities can contribute to higher levels of violence in general, including male-male non-relative killings.