2. What is the backbone of telling history?

Backbone history is a global router that will keep track of the history and let us enable the routing in the application. To Instantiate a route and start tracking the navigation history, we need to simply create the router class and call Backbone. history.

Explanation:

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."