Answer:
A is the correct answer
Explanation:
Gibbons v. Ogden stands for the principle that the federal government has the right to oversee interstate commerce. In Gibbons, two competing steamboat operators were up against a law in NY that gave Robert Fulton a monopoly.
Answer:
Being able to carbon date fossils
Explanation:
From the daily exposure to radioisotopes of organisms, scientists discovered to carbon date fossils. In carbon dating, the age of organic matter can be determined from the relative proportions of C-12 and C-14 i.e. isotopes of Carbon (carbon 12 and carbon 14). This ratio changes over the years because carbon-14 decays and is not replenished as there is no exchange with the atmosphere. hope this helps you :)
B. he helped inspire the American Declaration of Independence. hope this helped
O The history of all hitherto existing society is the history of class struggles.