how to get data of other table in laravel 5.2 - laravel

Question

I am new to Laravel and i am working on the project where i want to retrieve the full details of address table including city name, state name and country name.
In routes following is the code.
$addresses = App\Address::with('countries', 'states','cities')->get();
return $addresses;
when i am running the code i get an error
BadMethodCallException in Builder.php line 2161:
Call to undefined method Illuminate\Database\Query\Builder::countries()
Please help me.
cities table
Schema::create('cities', function (Blueprint $table) {
$table->increments('id');
$table->integer('state_id')->unsigned();
$table->foreign('state_id')->references('id')->on('states');
$table->string('cityName', 50);
$table->timestamps();
});
states Table
Schema::create('states', function (Blueprint $table) {
$table->increments('id');
$table->integer('country_id')->unsigned();
$table->foreign('country_id')->references('id')->on('countries');
$table->string('stateName', 50);
$table->timestamps();
});
countries Table
Schema::create('countries', function (Blueprint $table) {
$table->increments('id');
$table->string('countryName', 50);
$table->timestamps();
});
addresses Table
Schema::create('addresses', function (Blueprint $table) {
$table->increments('id');
$table->integer('country_id')->unsigned();
$table->foreign('country_id')->references('id')->on('countries');
$table->integer('state_id')->unsigned();
$table->foreign('state_id')->references('id')->on('states');
$table->integer('city_id')->unsigned();
$table->foreign('city_id')->references('id')->on('cities');
$table->string('firstLine', 50);
$table->string('secondLine', 50);
$table->string('thirdLine', 50);
$table->string('zipCode', 50);
$table->timestamps();
});
and in models
City
class City extends Model
{
// City belongs to a State
public function city(){
return $this->hasOne('App\State');
}
public function address(){
return $this->belongsTo('Address');
}
}
State
class State extends Model
{
// State has many Cities
public function cities(){
return $this->hasMany('App\City');
}
// State belongs to a Country
public function country(){
return $this->hasOne('App\Country');
}
public function address(){
return $this->belongsTo('Address');
}
}
Country
class Country extends Model
{
// Country has many States
public function states(){
return $this->hasMany('App\State');
}
public function address(){
return $this->belongsTo('Address');
}
}
Address
class Address extends Model
{
// Address has one City
public function cities(){
return $this->hasOne('App\City','city_id');
}
// Address has one State
public function states(){
return $this->hasOne('App\State','state_id');
}
// Address has one Country
public function countries(){
return $this->hasOne('App\Country','country_id');
}
}

Answer 1

Now that we can access all of a post's comments, let's define a
relationship to allow a comment to access its parent post. To define
the inverse of a hasMany relationship, define a relationship function
on the child model which calls the belongsTo method:
Look One To Many
You have one Country has many states and inverse relation is the state has one country.
So you should in model State change method country() like this
public function country(){
return $this->belongsTo('App\Country');
}
and use State::with('country')
P.S.
And check the other models.