The answer is Explore new territories big homie
The answer to the given question above is the third option: FRAME OF GOVERNMENT. This is the document made by William Penn which influenced the US Constitution. Specifically, this is Pennsylvania's Frame of Government referring to the colony given <span>by Charles II of England to William Penn. This frame of government is considered historical as this became the basis of American development and democracy.</span>
While the work was dangerous and difficult, many Americans were willing to leave behind the declining prospects of preindustrial agriculture in the hope of better wages in industrial labor. Furthermore, problems ranging from famine to religious persecution led a new wave of immigrants to arrive from central, eastern, and southern Europe, many of whom settled and found work near the cities where they first arrived. Immigrants sought solace and comfort among others who shared the same language and customs, and the nation’s cities became an invaluable economic and cultural resource.
source: https://courses.lumenlearning.com/suny-ushistory2os2xmaster/chapter/urbanization-and-its-challenges/
I believe that it would be steam.