Major reason for a change in European attitudes toward imperialism after 1870

it became necessary for European industrialized nations to expand their markets globally in order to sell products that they could not sell domestically on the continent. ... The economic gains of the new imperialism were limited, however, because the new colonies were too poor to spend money on European goods.

Explanation:

i dont know but i found it on google

https://www.tamaqua.k12.pa.us/cms/lib07/PA01000119/Centricity/Domain/119/TheAgeofImperialism.pdf

julius caesar turned the roman republic into the roman empire by coming in and taking the "dictator" role during the time of a civil war (elites vs lower classes) winning battles and reputation, then declaring him dictator for life

hope this : )

it increase by 12% a year from 1812-1820