This is the 146th most frequent Korean word.
인해
"인해" means "a flood of people" or "a sea of people" in English.
Here, "인해" is used to mean 'due to', expressing a cause or reason for the situation depicted in the sentence.
홍수로 인해 마을이 물에 잠겼습니다.
Due to the flood, the village was submerged.
In this example, "인해" indicates the reason for the preceding action, linking 'carelessness' to the resulting 'accident'.
그는 부주의로 인해 사고를 당했습니다.
He suffered an accident due to his carelessness.
Here, "인해" conveys a causal relationship, showing that technology improvement is the reason life improved.