Heartland (noun)

1. 1. The central region of a country or an area regarded as the core of a particular activity or interest.
2. 2. The most important or influential area within a larger region.

Origin:

The word 'heartland' comes from the middle english word 'hartelond' which means the central or interior region of a country.

Examples:

1. 1. The heartland of the country is known for its fertile farmland and friendly people.
2. 2. The heartland of the music industry is located in Nashville, Tennessee.
3. 3. The heartland of the United States is often considered to be the Midwest.
4. 4. The heartland of the software industry is located in Silicon Valley.
5. 5. The heartland of the fashion world is Paris, France.