What happened when newer, more accurate weapons were used agianst close order formations at antietam?

The correct answer is C). Both sides suffered huge losses.  

With more accurate weapons used against close order formations, the losses on both sides were so high that the battle was recorded as the bloodiest day of the Civil War.

The battle of Antietam was the single-most bloodiest day of the war. The Battle of Antietam was a six hours long battle during the Civil War. There were over 23,000 casualties. About 7,000 people died and the rest were wounded or missing.

The Confederates states wanted the recognition of European governments. The plan for the Confederacy was to invade Maryland so they could join the Confederacy. In the end, Robert Lee’s troops failed to inavade Maryland.

the growing interconnectedness of the world through communication, trade, and the exchange of ideas is an important theme in the history of the 20th and 21st centuries.

explanation:

the correct answer is b) the american colonies were not supporting each other.

at the time abigail wrote her second letter to john adams on november 27, 1775 she begins the letter with a series of rhetorical questions such as: if a form of government is to be established here what one will be assumed? , will it be left to the assemblies to chose one? with this questions, she is asking her husband what new form of government will be established and she is concerned that the delegates may not be able to come to consensus.

also, abigail believes that the regulations of government have been "so long slackened" that people could ignore a new government; she recognizes difficulty to establishing a new state.