We need an adverb because it modifies the verb trust. Implicitly in this context means completely and without any doubts.

Following the possessive pronoun their, we need a noun. Because it refers to the collective money that people have set aside over time, the plural noun savings is required.

The prepositional phrase in times of must be followed by an abstract noun. Adversity is the noun form of adverse and means a state of hardship, danger, or misfortune.

The sentence structure The [noun] of war… requires a noun to act as the subject. Prevalence means the fact of being widespread or common.

We need an adjective to modify the noun classes. Privileged describes a social class that possesses special rights, wealth, or high status.

The context describes war and chaos, so we need a noun with a negative prefix in-. Either the uncountable instability or plural instabilities fits grammatically.

The definite article the indicates a noun is needed. By compounding heave with up, we get the verb upheave. Then, by adding the noun-forming suffix -al, we get the noun upheaval, which means a sudden, violent change or disruption.

Following the adjective permanent, we need a noun. Displacement uses the negative prefix dis- and noun-forming suffix -ment to describe when people are forced to leave the place where they normally live.

We need an adjective to modify the noun jewellery. Opulent means expensive, luxurious, and lavish.

The passive structure waiting to be… requires a past participle. Because the hoards are currently hidden or lost, we must add the prefix un- (to reverse doing something) to mean discovered or brought to light.