Should the government have stepped in during the Great Depression ?

Need on these last 2 questions on my social studies homework 5 and 6 then i’m done with the homework

During world war ll, the untied states was a member of the allies axis european theater pacific theater

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.