 Eventually, an agreement was reached with Egypt that Taqali would remain  independent but would pay a nominal tax and be officially incorporated into Egyptian Sudan.
<meaning-changed>  Eventually, an agreement was reached with Egypt that Taqali would remain  independent but would pay a nominal tax and be officially incorporated into Egyptian Sudan.
 Eventually, an agreement was reached with Egypt that Taqali would remain de facto independent but would pay a nominal tax and be officially incorporated into Egyptian Sudan.