What was one long-term effect of the salt march? a. it led other colonial rulers to support the british empire. b. it led to a worldwide boycott on salt made by the british monopoly. c. the international attention forced gandhi to change his methods. d. the international attention forced britain to grant indians some rights.

D.The international attention forced Britain to grant Indians some rights.

Explanation:

The march of the salt, also known as the Dandi March and Salt Satyagraha, was a demonstration led by Mahatma Gandhi and carried out between March 12 and April 6, 1930. This march became one of the most important events that led to the independence of India from the British Empire.

the answer to your question is:

strong-mayor system

im not sure on this one