The answer to this would be the Commerce Clause. Hope this helps! :)
<span>National Environmental Policy Act (NEPA)
</span><span>Clean Air Act</span>
<span>While many believed that Native Americans were truly their greatest threat, in reality, it was the simple and mundane things like disease and accidents that did the most damage to the travelers. The fact that they traveled so closely together (and without the help of proper modern medicine) it was easier to get sick and without the ability to heal, eventually die from simple diseases such as the common cold. Other ways pioneers could be injured is by buggy turnovers on the steeper areas of hills and mountains which had more of a rocky flooring.</span>
No is the answer to that question
Charlemagne made Christianity the religion of the empire.
