Forty flags with their silver stars,

Forty flags with their crimson bars,
Flapped in the morning wind: the sun
Of noon looked down, and saw not one.
Up rose old Barbara Frietchie then,
Bowed with her fourscore years and ten;
Bravest of all in Frederick town,
She took up the flag the men hauled down;
In her attic window the staff she set,
To show that one heart was loyal yet.

Which of Barbara Frietchie’s actions leads most directly to a conflict?

Barbara Frietchie's action of taking up the flag the men hauled down and setting it on the staff in her attic window leads most directly to a conflict.