Answer:
the explanation is the answer
Explanation:
The steel highway improved the lives of millions of city dwellers. By the 1890s, the United States was becoming an urban nation, and railroads supplied cities and towns with food, fuel, building materials, and access to markets. The simple presence of railroadscould bring a city economic prosperity.
Scary for everyone cause he started a war
scratch that: the SECOND WORLD WAR!!!
Answer:
1. Carbon-14 breaks down into nitrogen-14
2. I think it is the first one but I am not completely sure
3. nucleons
4. Strong Nuclear force
