Answer B combines two sentences using compound verb and also it makes more sense.
Hello,
The Land of Ordinance of 1785 was a law that divided much of the United States into a system of townships to facilitate the sale of land to settlers<span>ended the disputes between the states, created townships, expanded U.S. territory, and gave settlers land.
This ordinance was important because it </span><span>ended the disputes between the states, created townships, expanded U.S. territory, and gave settlers land.
Faith xoxo</span>