Great Britain became the world's largest illegal drug dealer - addicting -30% of people in
southern China to opium.
True or False

True

Explanation:

The Britisher's interest had encouraged the production of opium because they earned the profit out of the raw materials. British became the largest supplier of opium in China in the 18th century. The British began to trade opium in southern China. The British in return got tea and silver which later shipped to Britain. The illegal opium trade proceeded to rise by 4,000 chests in 1790 as it continued to grow and reach 20,000 cases in 1838.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

i thinl it is the 1st answer