Midfeeding

Midfeeding refers to attacking countries close in networth to your own. Attacks of this type generally have the best results, as returns are increased when the attacker and defender are within a certain networth difference.
This method of landgrabbing can be dangerous and costly, as the defender is more likely to have either too much defense, or enough offense to retaliate. If the defender does retaliate, both countries might still benefit from ghost acres.