The bloated sales forces, analysts say, have alienated doctors and contributed to high drug prices.
This method left little time for advance warning and contributed to high death tolls.
Residents say the decrepit road that connects Lodwar to the rest of Kenya has contributed to high food costs.
He also dismissed the suggestion that the precipitous fall in the value of the dollar against other currencies had contributed to high oil prices.
"The liberalised labour market contributed to high exports, which subsidised this extremely wasteful investment by the Chinese government," said Victor Shih of Northwestern University in Chicago.
Denise King, a spokeswoman for Southern California Gas, said "it's a false argument" to say that her company's gas-storage patterns contributed to high prices.
Although there are no statistics on school attendance among Southeast Asians, there is general agreement that cultural hurdles, household stress and poverty have contributed to high dropout rates.
But, over the years, this attitude has contributed to high stress levels, deprofessionalisation and a focus on counting, not on what counts.
Still, there is no doubt that years of international sanctions have contributed to high unemployment, inflation and stagnation in important sectors of Iran's economy.
The flow of rents and dividends from capital contributed to high inequality of income; the top 10% captured more than 45% of all income.
Scarce funds, unsettled conditions in the country, poor sanitation, and a shortage of medicine contributed to high incidences of diseases such as tuberculosis, malaria, and pneumonia.
