Answer: B. :)
Explanation:
Czechoslovakia resisted Communism for a very long time but was eventually subsumed by the Soviet Union.
1) Alliances: When two countries made an alliance to keep each other protected from a country, the country decided to do the same thing and eventually either one of them declared war.
2) Imperialism: When a larger country took over a smaller country, sometimes the smaller one would try fighting back. Sometimes countries would fight over a country they both want to take over.
3) Nationalism: The head of the country would love his country and hate to see it fall, so when things get rough (Say poverty or lack of food/materials) A lot of times they would go scavenging through someone else's territory (usually smaller) to get the materials they needed so their country could thrive. This could also help to start a war.
4) Militarism: A lot of countries had this type of government and a lot of times it soon became a competition between land and seas, which also lead to fights and later on, war.
A historical source is valid when it:
A. was written by a person who observed an event.
<h3>What is a historical document?</h3>
This is the term that is used to describe a particular document that tells us of the trail of events that have occurred in the past. That is the events that have the timeline of having happened over a long period of time.
They are most valid when the event is being talked about by a person that has first hand knowledge of what happened instead of telling stories of what they heard.
Read more on historical documents here: brainly.com/question/228934
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Settle in jamestown... roses are red violets are blue now theres one less gorilla at the Cincinnati zoo
What time period are you referring to because at one time no.
