I believe an answer could be assimilation, as assimilation is the integration or process of people/ideas/culture into a bigger culture or society. It was one of the major results of immigration into the United States.
I hope this helps :)
Act like it is a real baby.
Yes that's true but everything should be in a balanced diet because even in a vegetarian diet there are products made of milk such as butter,ghee,cheese and many more so if we consume these types of foods also it is very harmful for our health whereas in a non-vegetarian diet fish is very good for health and consuming little red meat is also good so in both there are good&bad effects.
HOPE YOU UNDERSTAND.
Two examples would be: great depression and world war 2