Zoroastrian served as the national- or state religion of a significant portion of the Iranian people for many centuries before it was gradually marginalized by Islam from the 7th century onwards.

Supported by the regime and widely publicized until shortly before his death, he fell out of favor and his work was gradually marginalized during the final years of Gheorghe Gheorghiu-Dej's rule.

He and his supporters have gradually marginalized Mr. Csurka within the party, expecting him to leave.

He joined the Communist Party in 1953 and became a member of its Central Committee in 1965, however beginning with 1971 he was gradually marginalized by Nicolae Ceaușescu.

The country's left wing, now part of the ruling coalition, is likely to be gradually marginalized.

During the Franco regime, some government ministers were drawn from Franco's Carlist supporters, but the movement as a whole was gradually marginalized by the general.

Aboriginal societies were gradually marginalized under the reserve system, and it was not until the late nineteenth century, through the work of Silas Rand, that the tales of Glooscap began to emerge.

So might the way in which this week has gradually marginalized Margaret Thatcher.

Secretly he had been afraid that, after retiring from the government and writing his memoirs, he'd be gradually marginalized, treated as an eminence grise, invited to appear on Nightline once in a while, and to write the occasional thumb-sucker for the New York Times Op-Ed page.

The religion first dwindled when the Achaemenid Empire was invaded by Alexander the Great, after which it collapsed and disintegrated and it was further gradually marginalized by Islam from the 7th century onwards with the decline of the Sassanid Empire.