What invention was created to keep animals out of crops?

The invention that was created specifically to keep animals out of crops is barbed wire. Developed in the late 19th century, barbed wire revolutionized agriculture and land management. It consists of a wire with sharp spikes or barbs spaced at intervals along its length, which makes it difficult and dangerous for animals to push through or attempt to breach the fence. This effectively protects crops from being damaged by livestock or wild animals.

Prior to the widespread use of barbed wire, farmers utilized options like wooden fences, which were more labor-intensive to build and maintain, making them less practical for large areas. Electric fences and livestock gates serve specific purposes in managing animal movement and containment, but they do not have the same level of effectiveness or historical significance in protecting crops specifically against animal intrusion as barbed wire does.