Which country was the major source of raw cotton for Britain till 1861?

America

The correct answer is Option (1) → America

The United States of America was a major source of raw cotton for Britain until 1861.

Before the 1860s, three-fourths of raw cotton imports into Britain came from America. British cotton manufacturers had long been worried about this dependence on American supplies. When the American Civil War broke out in 1861, a wave of panic spread through cotton circles in Britain. Raw cotton imports from America fell to less than three percent of the normal: from over 2,000,000 bales (of 400 lbs each) in 1861 to 55,000 bales in 1862.