After wold war 3 why did the user want to control countries in eastern europe

There could be a-lot of answers for this question, eastern Europe is one of the most historically rich places in this world. Eastern Europe has a lot of land that this "user" could take over to do whatever they wanted it with it.

WELP there is no such thing as world war 3 yet so maybe try asking in 50 years XD much love

Explanation:

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.