美国于1785年开始在俄俄州测量西部土地. U.S. began surveying western lands in Ohio in 1785.

1785年,美国在七大山脉项目下开始对俄俄州西部的土地进行测量. In 1785, the United States began surveying western lands in Ohio under the Seven Ranges project. 托马斯·哈斯领导的努力建立了一个网格系统,将土地分为乡镇和区块,创造了标准化的土地分配和销售方法. Led by Thomas Hutchins, the effort established a grid system dividing land into townships and sections, creating a standardized method for land distribution and sale. 这项工作奠定了向西扩张的基础,并在开始点建立了一个碑式. This work laid the foundation for westward expansion and is commemorated by an obelisk at the Point of Beginning.