<span>There are there levels of adjective in English. The base form is when we are describing only one object, we say or write the very raw form of the adjective. (i.e. pretty). Next, we have the comparative form wherein we add -er to the end of the adjective to compare two objective, (i.e. prettier). Lastly, we have the superlative, wherein we add -est to say prettiest when we describe three or more objects.</span><span />
1 and 3 for sure
The plague occurred well before industrialization and the population increased.
I'm not sure about literacy-- it may have decreased as more children began to work in factories (industrialization led to increased child labor.)
is there a text or paragraph that would explain why he is in any of those moods?