The 1800's saw scientific inventions and discoveries in farming, medicine and communication. The 1800's did not see any inventions or discoveries regarding space travel. Space travel didn't start until the 1900's.
Here are a couple of different perspectives:
Native Americans
People, like the Native Americans, would see this event as a catastrophe since Columbus and his men slaughtered many Native Americans during his time in the Americas. He also discriminated against the Native Americans. This would lead to the harsh treatment of Native Americans for generations.
Colonists
Others would argue that the voyage was a huge accomplishment. This was the first time that people from the east side of the world ventured into the west side. This would lead to many great things like the creation of the United States. People to this day celebrate this voyage with a national holiday, Columbus Day.
Answer:
A couple examples of preventing a war in the cold war was nuclear treatys limiting nukes like the Intermediate-Range Nuclear Forces Treaty
Signed on 8th Dec 1987 In the Whitehouse other ways are diplomatic discussions and proxy wars so like in Vietnam USSR supported and aided the communist revolution without directly declaring war on the USA
The true statement would be"They believed in a system of checks and balances."
The Federalists wanted a strong, central government, so the first option would be incorrect. Also, they didn't fear the presidency would become too powerful, making the third option incorrect. The last option is incorrect because the Federalists supported the ratification of Constitution as they noticed the weaknesses of the Articles.
Hope this helps! :)