6. “Trim up the tree with Christmas stuff"
What type of figurative language simile , idiom?

The figurative language for the phrase is closely related to an Idiom.

A simile is a figure of speech that compares two things together with the use of like or as.

For example;

An idiom is a set of words that have been proven by their usage of having a meaning that cannot be deduced from the meanings of the individual terms.

The phrase “Trim up the tree with Christmas stuff" is as literal as it is being said but it is not an idiom but closely related to an idiom.

Learn more about the figure of speech here:

link

the answer is: the start of world war i, and russia’s hopes of benefiting from it

during world war i russian joined due to in their current crisis they were being supported by france and the war was already declared to them by germany, they needed to maintain their political goal and leadership role in the balkans, and is the same feeling that this excerpt evoke the eager of maintain the land value.