Answer:
The U.S had more nukes but the USSR had more powerfull nuks
With the boom in industrialization in the late 1800s, the biggest cities got much bigger. This was more possible now because railroads could bring in the raw materials needed for industry and could take out the finished goods. ... Thus, industry and trade had a great impact on the growth of cities in this time.
One would be teen pregnancy (short story my best friend is 15 and just had a baby girl named Ella 3 days ago, She didn't use any protection and refused to take birth control)
Another one is STD's those are very common especially if you have multiple partners.
A site I'm on says "Becoming less likely to finish High school" I am not sure if that is true. I suppose it could be true if you have a child before graduation but honestly if your education is important to you a child wont stop you from getting it. It may limit you tho.
Okay I hope this helps! Please rate!