Pig iron production in England rose from approximately

10,000 tons in 1790 to 400,000 tons in 1830

Nothing in 1800 to 500,000 tons in 1850

17,000 tons in 1740 to 2.7 million tons in 1850

1.5 million tons in 1760 to 3.1 mill

The correct option is "C." 17,000 tons in 1740 to 2.7 million tons in 1850.

Explanation:

The Iron Revolution in Britain explained the reason for the increase in the production of Iron:

British iron production in 1700 was 12,000 metric tons a year. This rose to over two million by 1850. It was Cort’s new methods which had tremendous  effects and his principles are still used today.  Improved productivity was necessitated by innovations in technology. Albeit,  the location of the industry experienced a big change as that of production and technology, as businesses were able to move to coalfields. However, the effects of innovation in other industries on iron (and in coal and steam) have great and reverse effects on each other.

c. the dred scott v. sandford case,

b.provides a written record of the transaction