Final answer:
New technologies caused both continuity and change in the United States from 1800 to 1848.
Step-by-step explanation:
In the period from 1800 to 1848, new technologies caused both continuity and change in the United States.
Continuity can be seen in the continued expansion and industrialization of the nation, fueled by advancements in transportation and manufacturing.
Change is evident in the impact of these technologies on society and the economy, such as the rise of large-scale agriculture and the market revolution.