The answer is A, or It was a clear victory for the Northern states.
Explanation:
The Battle of Antietam stopped the Confederacy’s advance into the Northern territories. Because the North won a tough victory in this battle, the way was paved for the Emancipation Proclamation to be issued.
As proved by the transatlantic flights of Lindbergh and Earhart, postwar airplanes were engineered to fly greater distance.
A transatlantic flight is the one of an aircraft accross the Atlantic Ocean from Africa, The Middle Easte or Europe to North America, Central America and South America or vice versa.
Charles Lindbergh crossed the Atlantic Ocean and landed safety less than 34 years later in Paris. Thus, he became the first pilot to solo a nonstop transatlantic flight, and as a result he changed public opinion with regard the value of air travel and laid the foundation for the future development of aviation.
Amelia Mary Earhart was the first female aviator to fly solo across the Atlantic Ocean. She became a pioneer.
