why was bull invented?

Who announced that Britain was at war? How fast did Grant take Richmond? When did Eva Beatrice Dykes die? Where was the prisoner of war camp in the Civil War? Why did th us change it's policy of neutrality? Who took care of Dr Johan Hendrik Weidner? How many wars did King john lose? What did a noble do for a knight? Who were north's trade partners before civil war? What conditions did Russia face that caused its withdrawal from ww1and what effect did its withdrawal have on the war? What caused production on the B-29 to slow? What was the date of the wounded knee massacre? What was the southern economy based on AFTER the Civil War? What pushed Europe to victory in world war 2? Who won the battle of Philippi Races? What effects did the holocaust have on survivors? Why did the tide turn to the Russians on the eastern front? Was France Communist state during the Cold War? What term means to call troops into active serivce? What is the code name for the invasion of Normandy?