Identify 3 major contributions of the Second Continental Congress.-- --added the lands that became the Northwest Territory--
--established a postal system--
--borrowed money from domestic and foreign sources--
--printed money--
--created the financial market that became Wall Street. created a national court system--

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.