How might the government be organized to prevent leaders from Gaining unlimited power?

Rank the following from most to least devasting: ordovician, permaian, cretaceous, pleistocene

Does manufacturing in the midwest affect the nations economy

Arecent poll of 500 residents in a large town found that only 36% were in favor of a proposed referendum to build a new high school. find the margin of error for this poll if we want 95% confidence in our estimate of the percentage of residents in favor of this proposed referendum.