What did Britain do in order to keep industrial secrets from the United States

forbade engineers, mechanics, and toolmakers from leaving the country

Explanation:i hope this will work

What did Britain do in order to keep industrial secrets from the United States? forbade engineers, mechanics, and toolmakers from leaving the country. What is the name for the voluntary associations of workers seeking labor reforms?

c is the correct answer for this question.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.