What is a article that is a secondary source

What is one reason the united states had a two party system

Iam giving 30 points to whomever answers ! which is an example of how the judicial branch ensures justice in our state? a. the citizens of the state elect a new member to the state highest court b. the georgia supreme court hears an appeal involving the death sentence. c. the governor of georgia signs a bill allowing for tougher sentencing guidelines. d. the georgia general assembly passes a law making it illegal to drive while on the phone.

Why were inventors essential or necessary for an industrial revolution to happen in america