Simplify the following text for a Grade 11 native English-speaking person.
Original: With the historical meaning , it refers to the city or state of origin of a colony ( as of ancient Greece ) , a city regarded as a center of a specified activity , or a large important city .
Simplified: In a broader sense , it refers to the city or state of origin of a colony ( as of ancient Greece ) , a city regarded as a center of a specified activity , or a large important city .