Astudy was undertaken to test the hypothesis that chewing tobacco increases the risk of stomach cancer. detailed historical data on chewing tobacco use were collected from 400 subjects with newly diagnosed stomach cancer and 400 subjects without stomach cancer. the results revealed that chewing tobacco was not a significant risk factor for stomach cancer. a. descriptive studyb. ecological studyc. cross-sectional study d. case-control study e. retrospective cohort study

The haitian revolution was the result of a long struggle on the part of the slaves in the french colony of st. domingue, but was also propelled by the free mulattoes who had long faced the trials of being denoted as semi-citizens. this revolt was not unique, as there were several rebellions of its kind against the institution of plantation slavery in the caribbean, but the haitian revolution the most successful. this had a great deal to do with the influence of the french revolution, as it to inspire events in haiti. the haitian revolution would go on to serve as a model for those affected by slavery throughout the world.