Maybe this is not a history but an anthropology question. Of course not every single native American society was egalitarian between the sexes, but there were many in North America where women played a much bigger part in labor, politics, religion, and even enjoyed powerful leadership roles. What allowed these conditions to appear in North America while women were socially subordinate to men in Europe, for example?
Hey,
it's a big question - since Mexico is part of North America you may be interested in this earlier answer I wrote on gender roles in central Mexico.
Some points I make there are how Aztec women surely had more agency in pre-colonial times, including rare cases of female rulers, but also agency in courts and in the positions open to them; and how Spanish influence in law and religion gave them less influence (although they did find new areas of influence). This included the impact of Iberian primogeniture laws, and native women being declared minors before the law - so through the example of Spanish colonisation we can see some major differences between gender roles in Iberia and Mesoamerica in these fields. I can't go into British America in detail for this, but would at least assume that Christian views of women - which in turn influence(d) their lower judicial status in Europe - would have played a role there as well.
I'd also highly recommend reading u/400-Rabbits' answer in that same thread for more insight into the lives of Aztec women and girls.
Hope this helps!