Answer:
"There can be but little rivalry between ours and any manufacturing or navigating community...As a necessity, not a choice, we have resorted to the remedy of separation"
Explanation:

The harmonic frequency refers to the resonant frequency that is an integral multiple of the fundamental frequency, harmonics are usually simple sinusoidal oscillation at a single frequency. where as Resonance frequency are frequencies that are not necessarily sinosudal or integral multiple of fundamental frequency and it may have complex oscillations made up of multiple harmonics ~
It's like if you play a piano with a single key, it will show harmonic frequency, but if you use multiple keys at a time it may show Resonance.
Answer:
D: Culture
Explanation:
Culture is a foundational determinant of health. Culture affects people and their health behaviors, and culture affects how people think about sickness and healthiness, how they eat, how they take care of them self and others, etc.