Answer:
Revolutionary war
Explanation:
By the middle of the 1600s almost all goods imported into the American colonies came into the colonies through the new England supports. Their relationship with a great Britain was therefore greatly affected by the American revolutionary war.
As a result of the American Revolutionary war, ties were broken between the American colonies and Great Britain which badly affected trade between them.
A stupendous American victory in October 1777, the success at Saratoga gave France the confidence in the American cause to enter the war as an American ally. Later American successes owed a great deal to French aid in the form of financial and military assistance.
Children performed all sorts of jobs including working on machines in factories, selling newspapers on street corners, breaking up coal at the coal mines, and as chimney sweeps. Sometimes children were preferred to adults because they were small and could easily fit between machines and into small spaces.
source: https://www.ducksters.com/history/us_1800s/child_labor_industrial_revolution.php