"In" is the root in the word "admit." It means to allow someone to enter or to confess to a wrongdoing. "Ad" is a prefix that means to move towards or bring forth.
debate
entrancition
No, "enter" is not the root word for "enterprise." The root word for "enterprise" is "prise," which means an undertaking or project.
Ban
Enter :)
salmonela for french
infiltrate
invade
Yes, "disallow" is a word. It means to refuse to allow or accept something.
People enter politics only to amass money, by whatever means.
The word that means to enter a land and conquer it is "invade." An invasion typically involves an armed force entering a territory with the intent to subjugate or control it, often leading to conflict and change in governance.