Final answer:
The independence of women after World War I was fueled by societal changes and the war's impact on gender roles. Advances in household technology, birth control information, and women's increased engagement in society and politics, particularly the suffrage movement, contributed to this shift. The 1920s solidified these changes with the emergence of the 'New Woman' who embraced freedom and new societal values.
Step-by-step explanation:
The event that may have sparked the newfound independence of women and ushered in an era of adopting more modern societal values was World War I. The war served as a catalyst for societal change, where women took on roles traditionally held by men, such as operating factory machinery, making financial decisions, and running farms and businesses, as men went to fight. With men away, women experienced a new sense of freedom and responsibility which continued even after the war's end.
Following World War I, women began to reject their pre-war roles and the culture of domesticity that confined them to home and domestic chores. Advancements such as the spread of household technologies, ready-made clothes, and canned foods, as well as the establishment of public agencies and the greater availability of information about birth control from organizations like the American Birth Control League founded in 1921 by Margaret Sanger, considerably changed women's daily lives. These changes allowed women more time to engage in education, community issues, and employment outside the home, leading to increased activism, especially in movements such as the women's suffrage movement, and eventually to greater equality in marriage and society.
As the nation recovered from World War I, the 1920s brought about a cultural shift with the emergence of the "New Woman," who defied traditional gender roles by working, studying, and participating in public life like never before. This period saw women expressing their independence through actions such as adopting freer styles of dress, dancing, and drinking in public, as well as exercising their fuller citizenship and societal roles in the aftermath of the war.