Original sentence: Some believe that these actions helped bring the country out of the depression--though there is  controversy over the extent to which this is true--and provided some of the infrastructure, including roads that are still in use today
Edited sentence: After the Court began to uphold his interventionist legislation, the economy took a sharp downward dip, which has been called a depression within a depression, from which it was only slowly recovering when the US entered WWII.During this time the economy was on a slow improving trend.For those who view the New Deal as a failure, the reasons are open to debate.Others argue that because this longest depression in US history was also marked by the greatest degree of government intervention in US history, although this claim is highly contentious.Some argue that the inherent instability of a market economy caused such a bad depression that even the well-chosen interventions of the New Deal could not correct it quickly.Some believe that these actions helped bring the country out of the depression--though there is considerable controversy over the extent to which this is true--and provided some of the infrastructure, including roads that are still in use today.Thus it is claimed by some that his intervention delayed the economic recovery that had been underway