One factor was barbed wire. As farmers and ranchers wisened up, they used the wire to fence in their cattle, destroying the use of cowboys, and taking away one aspect of the "wide open west". Herds of cattle took over the plains and destroyed the grass. In 1883 the big drought struck and water streams dried up and prairie fires grazed. Also the barbed wire and the natural disasters.
Answer: Please see in the explanation column
Explanation:
1)on a country-wide scale -----National level
2)the director of a political agenda whose goal is to place a chosen candidate in office---- campaign manager.
3)a unified and organized effort with a goal in mind---- Campaign
4) an issue that may not be agreed upon by many different sides, and causes many debates----controversial
5)to accept and agree upon --- adopt
6)on a smaller, non-widespread scale--- local level
Answer : George Brinton McClellan was an American soldier, civil engineer, railroad executive, and politician.
Explanation: