If you're asking about other countries... nobody.
The Union regarded the matter as a purely internal affair and did not seek outside assistance. All they really wanted was for other countries not to intervene on behalf of the Confederacy, and for the most part they got that, so in a sense it might be possible to say that Britain and France (the most likely allies of the Confederacy) "helped" the north by not helping the south.
The Confederacy had hoped to forge an alliance with Britain and France. While those countries were somewhat sympathetic and British ships, at least, made some efforts to circumvent the Union's blockade of southern ports, ultimately both countries realized that it was unlikely that the Confederacy would survive, and the political costs of having supported it would be high.
the north
It is possible that at least two inventions not related to way helped the North win the Civil War. The first was the railroad and the other was the McCormick reaper.
In the civil war, the North was called the Union.
Because of the Civil War in the North, income tax was invented.
The Civil War (1861-1865) The Civil War was fought between the Union (north) and the Confederacy (south). The war was fought mainly about the issue of slavery. The Union eventually won and that is what makes us the United States of America today.
the north
The banking system helped the North to pay for the arms it bought to use in the war.
McKay's shoe manufacturing machine
He had helped the north win the civil war
the crops the north and south had planted.
The North was more industrial and had many more people, thus giving them an easier time in raising money for the civil war...
Industrial power - the capability to manufacture war-supplies.
The Gettysburg Address helped the Union
Because the south wanted slaves and the North did not want slaves.
guns, food, and shipment supplies basically all the supplies that were needed in a war.
It is possible that at least two inventions not related to way helped the North win the Civil War. The first was the railroad and the other was the McCormick reaper.
The north doesn't grow cotton, but, it has a lot of industry. The south's use of cotton, (and their need of slaves), and their limited industry helped lead to the civil war and the south's defeat.