This civil rights activist wrote the essay on the duty of civil disobedience to protest slavery?

Henry David Thoreau is the correct answer.

Explanation:

Henry Thoreau was an American philosopher and Naturalist. He was supported by his friend Ralph Waldo Emerson by providing the place to live. This place inspired his work, Walden Pond. His best-known works were Walden and the essay Civil disobedience in which he argued for the resistance to the government as the moral opposition to the unjust State. He was a member of the Transcendentalism movement. When US declared war against Mexico in 1846, Thoreau viewed as the plot of southerners to expand slavery in South West and stopped paying his taxes and he was jailed for this. He started writing his essay when he was in Jail. The term civil Disobedience was popularized in the US with his essay Civil Disobedience.

the answer is a, salt plain

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.