Why do some revolutions end in "Restoration" of the old order?

The early democratic-republican party believed that the united states

States' compliance with the native american reservation treaties drawn up by the federal government for the native american nations is:

Which suggests the most critical aspect of the peak oil theory? 1) controversy rages over rumors that the fracking lobby in washington has influenced the statistics. 2) supporters and critics argue endlessly over the rate of extraction and shape of the bell curve. 3) saudi arabia will soon have to begin fracking, leading to protests and further destabilization. 4) a new oil discovery means a fresh peak cycle, making that region the target of aggressors.