This might be pretty easy for experienced developers. I am a beginner so please help.

There are 2 tables, each with just 1 column
Table 1 is Country, including a single column of list of 100 different countries

Table 2 is Comments - again a singe column of large description,
Column size is nvarchar(max)

How do I select those columns which includes any of the 100 countries from the country table.
Ex. Comment - 'I live in USA'

Thank you