The correct answer is - Exports grew significantly in the 1820's.
This graph shows us the exports of opium by the British toward China. Starting from the year of 1729 the exports of opium in China constantly grew, though relatively slowly. In 1790 there's significant rise in the exports, but that it kind of stagnates and the growth is minimal in next three decades.
<em>From the begging of the 1820's to the end of the 1820's the exports of opium start to grow very quickly. The rise in exports was so quick that in just this decade the exports of opium went up by around three times (tripled).</em>
That trend of rapid growth in the opium exports continued in the next decade, the 1830's, as well.
Indian merchants and industrialists support the civil disobedience movement because they wanted to import, make a profit, and have a conversion rate for rupees.
<h3>What is civil disobedience moment?</h3>
Civil disobedience moment means when a person wants to oppose something but in a peaceful manner.
The merchants and the industrialists wanted protection against the import that they were doing. The industrialists and the businesses wanted to earn more profit from what they made after World War I.
They also wanted that the government may allow them to establish some major industries. They also wanted to have a rate at which they can exchange rupees.
Learn more about civil disobedience, here
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When the light bulb industry becomes a competitive market, the price of the light bulb will decrease. This is due to the fact that the industry will no longer monopolize the production of light bulb, other competitors will bring their product to the market. Thus, this will result to competition which will bring the prices lower since consumers will opt to buy lower prices of the same product.