The courage that my mother had, which line suggests that the mothers character was formed by the land where she was born?

"Rock from New England quarried" is the line that shows the courage of mother from where she belonged to.

Explanation:

The poem "The courage that my mother had" is written by Vincent Millay. In this poem, the poet says that her mother had a lot of strength and she admired that strength. She wanted to have the strength in her that her mother had. She says that the materialistic things and possessions of her mother can not give her the strength that her internal attributes could.

The third line in the poem told that this strength in the mother came from the place where she had come from. She had come from New England and that was the place which gave her the courage that she had. Her character was chiseled from her environment like a rock from the quarry.

"Rock from New England quarried" is the line that shows the courage of mother from where she belonged to.

the answer is irony!