Expansionism (noun)

1. A policy or ideology of expanding a country's territory, influence, or economic opportunities through colonization, annexation, or other means.
2. The act of expanding or the state of being expanded.

Origin:

From the verb expand, from the latin expandere, meaning "to spread out".

Examples:

1. Historians have long debated the causes of American expansionism in the late 19th century.
2. Some critics argue that the country's current expansionism in the Middle East is a form of imperialism.
3. The company's new expansionism strategy involves opening up new branches in major cities around the world.
4. The country's rapid economic expansionism in the last decade has led to a significant increase in its global influence.
5. The country's expansionism in the past century has led to a significant increase in its territory.