During the massive social changes occurred as technological innovations shifted the economic base of countries in europe, and later the united states, from agriculture to manufacturing.

Industrial Revolution.

Explanation:

Industrial revolution referred to the transformation of the traditional agriculture and handicraft economy to machine-based industries. The history of the industrial revolution is rooted in eighteenth-century England from where it spread to other Europeans nations and continents. Its characteristics include urbanization, mass-scale production, technological innovation, etc.

the declaration states, “we hold these truths to be self-evident, that all men are created equal, that they are endowed by their creator with certain unalienable rights, that among these are life, liberty, and the pursuit of happiness….”