The phrase "ago contributed" is not correct and does not make sense in written English.
It cannot be used as it stands because "ago" typically refers to a point in time in the past, while "contributed" is a verb that requires a subject and context.
Example: "He contributed to the project last year."
Alternatives: "previously contributed" or "contributed in the past."
The advent of mortgages in Romania about five years ago contributed to the surge, according to Casper Overduin, director of the Sibiu real estate development company EU Traverse.
She is among those who believe development upstream, based on decisions made many years ago, contributed mightily to the events of 2016 and this year.
U.S. involvement in the Iran-Iraq War, more than twenty-five yeago ago, contributed to the creation of the nuclear program that America now hopes to contain.
Geologic processes of the Mesozoic Era (about 250 to 65 million years ago) contributed sedimentary layers of limestone and sandstone, most of which have been either eroded or covered by volcanic rocks.
ANY American who bought a top-of-the-range Maytag Maxima front-loading washing machine a few years ago contributed in his own small way to the country's persistent trade deficit; the machine was made in Germany.
No author or actor in future would have to endure the resentful crowd of political fixers who felt entitled to attend because they had long ago contributed a word of support to the building of the theatre.
Coccolithophores were extremely abundant during the Mesozoic Era (252.2 million to 66 million years ago), contributing to deep deposits such as those that constitute the white cliffs of southeast England.
Ignatius Bwalya, a historian at the University of Zambia, describes the country as a patchwork of immigrant groups that fled wars elsewhere in Africa, like Congo, Angola and South Africa, several hundred years ago, contributing to a collective aversion to conflict.
New users are also active as they try to figure out the service, with newbies who joined less than 3 months ago contributing 22percentt of all Tweets.
Sale had ended Northampton's 11-game winning run in the Premiership 12 days ago, contributing towards the worst spell of the campaign for Jim Mallinder's side, who had lost their last three in all competitions.
Full disclosure: Although I have had no contact with the current generation of editors, I did once many years ago contribute to the Harvard Business Review when it was under previous editorial management.
