The word countries is the plural form of the singular noun country.
The possessive form of the plural noun is countries'.
The singular possessive form is country's.
The word countries is the plural form of the singular noun country.
The possessive form of the plural noun is countries'.
The singular possessive form is country's.
The form countrys is neither plural nor possessive.
The plural form for the singular noun country is countries.
The possessive form for the singular noun country is country's.
Yes, the form countries' is the possessive form of the plural noun countries.
Example: All of the countries' delegates had to agree to the plan.
The apostrophe means that it is possessive. Countries is plural.
Singular possessive: secretary's Plural: secretaries Plural possessive: secretaries'
The plural is relatives. The plural possessive is relatives'.
The plural is lads. The plural possessive is lads'.
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is suffixes. The plural possessive is suffixes'.
The plural possessive of stepsister is stepsisters'.
The plural form is echoes. The plural possessive is echoes'.
The plural form is inches. The plural possessive is inches'.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The plural possessive is pals'.
The plural possessive of bandit is bandits'.
Studies' is the plural possessive of study.