The New South movement was an effort by southern leaders to integrate the South more fully with the rest of the US and to do away with the old plantation-based economy. It largely failed to gain significant momentum in terms of race relations and economic development by WWI.
They did this because they knew things would change overtime that that we would need to be able to change the constitution accordingly. However the process to amending the constitution in a long one and it is very difficult to do so. <span />