The most important breed of wool producing sheep in the world is:

Solution (By Examveda Team)

By 1810 Australia boasted over 30,000 sheep and was one of the world Merino wool trade centers, together with the United States and Germany and by 1840 it was the most important Merino sheep grower, together with South Africa and New Zealand. The rest of the world focused on cross-bred and coarser-wool sheep breeds.