The correct answer to this open question is the following.
You forgot to mention or attach the lenses that you refer to in the question. However, we can answer is general terms.
When we talk about the term "lens" in research, we are referring to a specific perspective to examine the topic at hand or the study. We can use philosophical lenses, economic, organizational, social, or psychological theories.
So we do not what lens you chose, but whatever your choice was, this lens might change how you approach researching your topic, thus affecting the historical narrative, because that particular approach is going to offer you different sources, authors, perspectives, and research lines to be followed. Your historic narrative would suffer modifications because you will have so many approaches to include in your research.
They haven't been vaccinated against diseases that are common in Europe or their bodies aren't adapted to European lifestyles
He warned the people about the M.I.C (Military industrial complex), where STEM subjects would be widely used for military weapons.
Answer:
introduction of European diseases to which native peoples were not resistant
Explanation:
The native people of Mexico and New Spain far outnumbered the Spanish colonial masters. However, certain European diseases such as Smallpox, influenza, mumps, measles were introduced and the native people had no resistance to them.
Since the people had no resistance to these diseases, their population was easily decimated, giving the Spanish an upper hand.
If we grow up following specific culture rules then we comtinue to follow them even if those around us dont