Sentence Correction Doubt

Please explain the below point:

Past Perfect can make a tricky sentence in which the first clause
expresses an early action in Simple Past. Then, a second clause expresses a later action in
Past Perfect to indicate continued effect (by a still later past time).

Ali Tariq wrote:

Please explain the below point:

Past Perfect can make a tricky sentence in which the first clause
expresses an early action in Simple Past. Then, a second clause expresses a later action in
Past Perfect to indicate continued effect (by a still later past time).

Source please.

karishma315 wrote:Please explain the below point:

Past Perfect can make a tricky sentence in which the first clause
expresses an early action in Simple Past. Then, a second clause expresses a later action in
Past Perfect to indicate continued effect (by a still later past time).

Right: The band U2 WAS just one of many new groups on the rock music scene
in the early 1980's, but less than ten years later, U2 HAD fully ECLIPSED
its early rivals in the pantheon of popular music.

Shouldn't past perfect be used for an earlier event

karishma315 wrote:Please explain the below point:

Past Perfect can make a tricky sentence in which the first clause
expresses an early action in Simple Past. Then, a second clause expresses a later action in
Past Perfect to indicate continued effect (by a still later past time).

Right: The band U2 WAS just one of many new groups on the rock music scene
in the early 1980's, but less than ten years later, U2 HAD fully ECLIPSED
its early rivals in the pantheon of popular music.

Should'nt be past perfect be used for an earlier event