Answer:
Although Prince Henry the Navigator was neither a sailor nor a navigator, he sponsored a great deal of exploration along the west coast of Africa. Under his patronage, Portuguese crews founded the country's first colonies and visited regions previously unknown to Europeans.
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The images used here represent a very significant event in American history. That event was the attacks on September 11, 2001. It was important because aside from the British invasion during the war of 1812 and the Japanese attack on Pearl Harbour, there had never been an attack of such a magnitude on American soil. America thought it was safe and isolated from the problems in the rest of the world. The picture of the newspaper, with the headline "U.S. ATTACKED" would have been incredibly shocking to those who read it. The other two images of the impacts themselves and the second plane, moving towards the towers show the magnitude of the attacks.
Answer:
The Antietam enabled the Union to repel the first Confederate invasion of the North.
He needed Britain's aid to avert land being ceded to French settlers in the Louisiana Purchase. He needed Britain's aid to battle against Governor Harrison's soldiers at Prophetstown. He needed Britain's aid to restrict American settlements from encroaching on Indian land. He needed Britain's aid to subdue his brother Lalawethica, who had staged a coup.