What were the main reasons for america turning outward (i. e., becoming an international or global power) ?

The main reason for the America to turn outward was because of the reason that they are likely to export more, they had more power, ending the relative isolation, have better manufacturing capabilities and as well as they have more wealth compared to other countries. And by that, the laborers are feeling unrestful because of their jobs that they tend to look out of the different countries in means of creating a safety valve.