Answer:
I cant really help you but I literally have the same answer
Explanation:
The Ohio river valley was an area the french and British were fighting over<span />
<span>Manifest Destiny was a major influence on how the frontier developed. Manifest Destiny is the doctrine that our land was one that was destined to stretch from sea to shining sea. The reason that this was influential in the frontier's development is that when plans were being made, instead of slowly expanding outwards, the country exploded out living a middle frontier that was neither as developed as California or the East. </span>
It has made security is stricter in many places but mainly in airports they started checking bags more often and searched bodies in a thoroughly manner.
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