economic advance into another country; economic expansion abroad
Refers to a country's businesses entering and operating in a foreign market, often with a nuance of strategic or large-scale expansion. The gloss 'economic invasion' can carry a negative connotation, implying aggressive or unwelcome penetration.
The economic advance of Japanese companies into Asia is accelerating.
That country is wary of foreign economic expansion.
経済侵略 explicitly means 'economic aggression/invasion' and is more strongly negative than 経済進出, which can be neutral or strategic.
海外進出 is a broader term for 'overseas expansion' by companies, not limited to economic aspects.
Compound of 経済 (economy) and 進出 (advance, entry). The term likely emerged in the context of post-war Japanese economic expansion.