four year old evan gets a ride-on toy tractor for his birthday. he immediately runs to his room and grabs his cowboy hat. his younger sister also goes to grab a cowboy hat but evan says ""you can’t wear one—cowboy hats are for boys."" which theory of gender development best explains this scenario?

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.  

answer; longitudinal;