South Carolina was placed under military control because Abraham Lincoln believed that reconstruction of the South, after the Civil War was done, needed to be merciful to heal the country. The Reconstruction Act of 1867 placed Southern countries under military rule.
The climate promote the development of central authority by
which the arid climate has required irrigation in a large scale of projects
that is being directed and in a way that it is also contributes to the
development of the central authority.
The answer should be:
Animal & human power were generally replaced with steam power.