Which invention was used primarily in the cattle industry? a. barbed wire b. grain drill c. plow d. windmill

A. barbed wire

Explanation:

Barbed wire was a revolution in the cattle industry. Before the barbed wire people would grow big hedges with thorns or build wooden fences and that was expensive. Barbed wire fence would be made with wire and only poles to keep the wire in place and that cut the cost tremendously and allowed farmers to mark their land while keeping cattle.

Explanation:

Ionic bond is a type of linkage formed from an electrostatic attraction when a positively charged ion forms a bond with a negatively charged ions and one atom transfers electrons to another.Fe + 2HCl → FeCl2 + H2 (single displacement reaction) . Therefore x=2