encroachment

(noun) any entry into an area not previously occupied. Synonyms: invasion, intrusion. Examples: "An invasion of tourists." "An invasion of locusts."

(noun) entry to another's property without right or permission. Synonyms: trespass, violation, intrusion, usurpation.

(noun) influencing strongly. Synonyms: impingement, impact. Examples: "They resented the impingement of american values on european culture."