Early American industry was given a boost by:

war

transportation and communication improvements

new power sources

mass production methods

monopolies

Among the aspects that have been as much of an economic boost during the American Industrialisation include:

(1) war,

(2) transportation and communication improvements,

(3) new power sources,

(4) mass production methods

The term that was not included among the choices is "monopolies." The surge of industrialisation in the United States paved way for it to become a global superpower.