How does evaluating a source help researchers form opinions?

What is the supreme law of the land? the declaration of independence the federalist papers the articles of confederation the constitution

Describe two observations that galileo was the first to make with his telescope.

Which of the following encouraged westward expansion? a.the government decreased the price of federal land. b.each of these represents actions taken to encourage westward expansion. c.the government decreased the price of federal land d.the second national bank lowered the cost of borrowing money (reduced interest rates)