I am the bridge that connects both sides.
I am the railroad that travels across the nation.
I speak two languages, crossing words back and forth.
What root word am I?

am is the root word for-  the word am I?

Explanation:

The Latin root word am means “love.”  

A root word is a word or  part of a word can be form the basis of new words through the addition of prefixes and suffixes.

am is a prefix word

Examples:  amateur, amatory, and "amenity"

Here, the word "amenity" expresses the word "am i"

amenity means things that people "love" to have that make a place comfortable to live in.

bridge and railroad helps people to adopt a comfortable and ease of living.

Hence ., am is the root word for-  the word am I?

first of all, dante wanted to write an account of the search for spiritual atonement and salvation, and this desire drew heavily from dante's own experiences. dante was living in exile while writing inferno and so, much like his poetic counterpart, he felt like he had lost his way and needed direction.

explanation: