Meaning : A series of actions advancing a principle or tending toward a particular end.
He supported populist campaigns.
They worked in the cause of world peace.
The team was ready for a drive toward the pennant.
The movement to end slavery.
Contributed to the war effort.
Meaning : Any of the more or less continuous military expeditions in the 11th to 13th centuries when Christian powers of Europe tried to recapture the Holy Land from the Muslims.
Meaning : Exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person. Be an advocate for.
The liberal party pushed for reforms.
She is crusading for women's rights.
The Dean is pushing for his favorite candidate.
Meaning : Go on a crusade. Fight a holy war.