Why does Madison fear “a gradual concentration of the several powers in the same department” of government?

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?

Which european nation had the most dominant navy during world war i

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.