What is the difference between primary and secondary sources?

a. primary sources are always reliable, while a secondary source's reliability depends on its creator.
b. primary sources are firsthand accounts, while secondary sources are created after the fact.
c. primary sources are very old, while secondary sources are created recently.
d. primary sources are created by regular people, while secondary sources are the work of experts.

What was the result of the supreme court ruling in gibbons v. ogden the court supported the establishment of a national bank and prohibited states from taxing the bank. the court decreased the power of the federal government by restricting steamboat travel to within a state. the court decreased the power of the federal government by allowing states to tax the national bank. the court defined interstate commerce and declared federal law supreme over state law.