hi, i really need help by the end of the day.

an improved type of fencing that enabled farmers tp enclose land on treeless plains

barbed wire??
http://www.google.com/search?q=barbed+wire&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA

??

Yes, barbed wire is the improved type of fencing that enabled farmers to enclose land on treeless plains. Barbed wire is a type of wire fencing that has sharp edges or barbs along its length. It was invented in the late 19th century and quickly became popular among farmers in the United States and other countries.

To learn more about barbed wire, you can search for it on Google. Just click on the following link: [barbed wire](http://www.google.com/search?q=barbed+wire)

This will take you to a Google search results page where you can find more information about barbed wire, its history, uses, and other related topics.