Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Output per farm worker in the northern United States and Britain in the early nineteenth century was many times that inEastern Europe or in medieval England and wages were correspondingly higher. Technical progress explains little of the high American and British productivity in the early nineteenth century, nor, in the American case, does abundant land per worker. Instead, most of the difference derived from more intense labor in America and Britain.