Question

Why did the Salt March occur?

to protest an unfair British law
to find salt, as it was in short supply
to increase salt exports to European countries
to attempt to shut down the British salt works

Answer 1

to protest an unfair British law.

Briefly: Gandhi’s 1930 Salt March (Dandi) was a nonviolent protest against the British salt monopoly and salt tax—he marched to make salt from seawater in defiance of the law, not because salt was scarce or to boost exports.