True.
Pilgrims came to North America because they wanted to worship in the ways they wanted to and not how the church told them to.
The altitude and climate change
There are instances of low, rounded and subdued topographic features that sometimes being overlooked in the field and has not been seen or observed that's is why vertical exaggeration is necessary to enhance the measurement of height in models and presentation of terrains.
It was caused by a mix of different scenarios. Rome was constantly attacked by Barbarian tribes; they were over-expanded, which made it really hard for them to keep their entire empire under control; they had a lot of economic problems and relied too much on slave labor; and they spent way too much money on their military, just to name a few factors.