The question most closely matches the definition of a literary legend. A legend, unlike a myth or folktale, is neither proven to be true nor proven to be false. It is usually a story told that the listener perceives it to have taken place in human history without any substantial backing evidence.
The past tense is believed.
The past tense of "believe" is "believed" and the past participle is also "believed."
It is believed that grasshoppers do spread disease. In the past, it has been proven that grasshoppers spread the VSV virus to cattle and horses.
The past participle of 'prove' is 'proved'. The form 'proven' is also found and is acceptable. It is used particularly in Scots law, in the verdict 'not proven'.
Had proven.
"Was believed" is a verb phrase made up of the past tense verb "was" and the past participle "believed." The main verb in the phrase is "believed," while "was" serves as an auxiliary verb indicating the past tense.
The past tense is believed.
what is the past form of the verb cannot
The word believed is a past tense verb. It is the past of believe.
Had believed is in the past perfect tense. It is used to indicate an action that was completed before another action in the past.
The present perfect tense of "proven" is: "I had proven". It combines the present in the past tense.
Proven is the past participle; proving is the present participle.