Claire and his crew isolated themselves without supervision, but East Africa wasn't worried about the people of Rovinard Village running around. As a relatively underdeveloped area, the Nile River province not only had a sparse population but also extremely backward transportation. Running around recklessly might lead to death.
Rovinard Village had only one road leading to the city, and this road wasn't built by East Africa but was originally treaded by Black people themselves. One can imagine how poor the road conditions were. Of course, it's not that East Africa didn't intend to build roads, but rather, as a new immigrant village, East Africa hadn't had time to take care of it.
Building roads had a necessary premise: the road is meant for people. Therefore, since originally no one lived in the area of Rovinard Village, there was no need to build roads. Surely you wouldn't build a road for animals to walk on!
