But Britain deprived them of it. Two institutions stood in the way of progress. One was slavery, which Smith abhorred on moral grounds but which he also saw as an enemy of growth, since slaves had no ...

No matter how you look at it, this data exhibits a strong effect due to the blocks (F-test p < 0.0001) and no significant interaction between treatments and blocks (F-test p > 0.7). But the lack of ...