Calculating steady state level of population using the death which has changed as increased war and urbanization

The authors argue that the Ma of total stagnation but those countries experienced a very level and output. The reason for this they suggested is that when countries to increases in death schedule through increased warring and urbani mechanism below.

a) find out the steady state levels of population.

b) describe how might we transition among these two steady states and growth during the Malthusian regime?