Chuck berry's song "maybellene" has country music influence because of its:

The answer is - because of it's strong honky-tonk two-beat in the chorus.

The honky-tonk sound has a two-beat rhythm and it is a type of country music. The first music genre to be commonly known as honky-tonk music was a style of piano playing related to ragtime but emphasizing rhythm more than melody or harmony. It gained widespread appeal in the 1950's.