Highest and oldest are not nouns in that sentence or at all. They are adjectives because they describe a noun. A noun is a person, place, thing, or idea. Capital is the noun in this sentence.
Washington D.C. doesn't have a capital, because it is already the national capital of the United States.
United States (of America).
"United States" is a proper noun. A proper noun is the name of a person, place, or thing; United States is the name of a place. A proper noun is always capitalized.
Yes because it is the name of the country: "The United States of America"
A group of people, states that are joined in a common causeJoined TogetherA confederation is a country made up of a group of semi-autonomous units, each of which has its own sphere of governance but which surrenders certain matters to a central federal government. Examples include Switzerland, Canada and the United States of America.
Fanta Fe is the capital city of New Mexico. It has an elevation of 7000 feet above sea level and is the highest state capital in the United States.
Santa Fe, New Mexico is the highest capital city in the United States with an altitude of 7,199 feet above sea level.
Evansville is not the capital of Indiana. The capital of Indiana is Indianapolis City, which has one of the highest population around in the United States.
Washington D.C. is the capital city of the United States.
The national capital of the United States is Washington D.C
Washington D.C. is the capital city of the United States.
The President of the United States is the highest paid public official in the United States, but not the highest paid president in the world, nor the highest paid person in the United States.
Find more names of the capital of the United States
The United States Military Academy at West Point is the highest ranked military school in the United States.
The United States capital is in Washington D.C.
Utah is one of the 50 States in the United States, and is not a capital.
Detroit, Michigan was known as the murder capital of the United States in 2001, with the highest murder rate per capita in the country that year.