5. Explain how improvements in transportation and communication made possible the rise of the West as a powerful, self-conscious region of the new nation. Thoroughly describe the arguments made that linked American freedom to westward expansion. Who or what were obstacles to freedom in the pursuit of expansion? How did Americans deal with those obstacles?

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.