The answer to this question is false!
The Hundred Days Offensive Jul–Nov 1918 was the costliest
The Ludendorff offensive other wise known as the spring offensive was a German offensive on the Western Front intended to win the war before the American troops that had begun arriving in France could fully deploy.
I'm unsure of how far they advanced
Kaiserschlacht was the last German offensive and was a series of German attacks along the Western Front.
As a victim of the Indian attacks, Mary Rowlandson wrote a vivid description (her short book, "A Narrative of the Captivity and Restoration of Mrs. Mary Rowlandson") of the eleven weeks and five days she spent living with the Native Americans.
Answer:
Promoting the general wellfare