をささげた

dedicated …; offered …

→ を
phrase Rare #33,995
dedicated …; offered … を marks what was dedicated or offered; ささげた is the past form of ささげる. Often used for devoting one’s life or effort to something.
JA: 彼は科学の研究に一生をささげた。
EN: He devoted his whole life to scientific research.

彼女は音楽に一生をささげた。

She devoted her life to music.

彼は国のために命をささげた。

He gave his life for his country.

彼は科学の研究に一生をささげた。

He devoted his life to scientific research.

彼女はひざまずいて神に祈りをささげた。

She knelt down and offered a prayer to God.