Answer:
Nuclear Arms race.
Extensive spying techniques.
Proxy Wars were fought under the influence of the two world powers.
Explanation:
Both countries have used comprehensive methods of spying against each other. It is estimated that in all of the numerous proxy wars waged between the United States of America and the Soviet Union, more than eleven million civilians were killed. The U.S. had a national intelligence agency named the Central Intelligence Agency (CIA) and the Soviets had the KGB. The Space Race emerged from the Cold War and the Internet was a direct result of that. During the Cold War there was a spike in nuclear weapons.
Zimmermann telegram- Nothing like negotiating with a neighbor to invade their front lawn.
Unrestricted submarine warfare- Sinking ships owned by the US constantly is already making us angry.
and the sinking of the Lusitania- Now this wasn't the final straw but it did indeed shake US support for Germany and caused outrage all over the USA.
Dear family,
The past weeks have been quite rough. The corn stalks grow weakly, and the beans have hardly sprouted. We've slaughtered two pigs already, and haven't the funds to purchase more. On a better note, my son is now old enough to till the soil, so he can help on the farm. My wife and daughter have cleaned our wooden house these past days, and my daughter has made herself and brother a quilt. Do write soon.
Sincerely,
[name]
Depends some don't want to let go of the past, others it could be they are scared of being judged for what their ancestors did. They also might have PTSD this might give them flashbacks and scary dreams about things they might have seen.