Joseph Priestley discovered oxygen in 1774. His experiments proved that air is a combination of gases and that oxygen is necessary for fire.
First Continental Congress met secretly in 1774 in Philadelphia, Pennsylvania. In response to the Intolerable Acts, 56 representatives from 12 colonies discussed their grievances. Georgia did not send members. Peyton Randolph from Virginia was the president. The First Continental Congress, which ended on October 26, 1774, had accomplished two goals. The group decided that the colonies would boycott British goods starting in September 1775. Also they agreed to meet again in May 1775. Idea: Children could find out how people were chosen to attend the First Continental Congress. They could also read the journals of the meetings at: Journals.