Is it a multiple choice question or is just writing
Answer:
It's the last one. "The population of indigenous peoples in the Americas declined after Europeans started establishing colonies there."
Explanation:
It's the only one that isn't a statement of opinion. It's stating a solid answer without stating their own personal feelings on the topic.
I hope this helps!
They have less security to cover the borders and more land to cover, making it easier for intruders to enter and take over of some kind