What were the push factors many immigrants faced in the 1800s? Question 4 options: War in their homeland Religious persecution No jobs or education All of the above

All of the above .

Explanation:

There were many waves of immigrations at different times during the 19th century. In the first half, immigrants from Northern and Western Europe made the bulk of those arriving. One third of them came from Ireland, where a massive famine had occured. Germans were another major group. Chinese came following the gold rush in California and worked in the railroad construction.

i believe it would influence their own way of understanding things. it shall be a foundation where they can draw or start an argument.   historians are also  scientists that  have their tools of analysis and expertise to unlock a variety of difficulties such as relationships of man, origin, politics, economy, and culture. based on facts and understanding on these areas, they may shade light to extract ideas and develop options to validate a hypothesis or debunk it.