The Era of the Texas Cattle Kingdom at its height was defined by- A. the fencing of the open range
B. the concept of Manifest Destiny
C. high unemployment and dust storms
D. the movement of cattle northward on cattle trails to rail stations

D

Explanation:

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings