Use the timeline to answer the question. which events happened in 1928? select the two correct answers.
a.) kellogg-briand pact is adopted
b.) coolidge refuses to run for president
c.) washington disarmament conference is held
d.) hoover is elected president
e.) the revenue act passes

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.