Poland east of the Vistula and San -- Socialist Republic of Eastern Poland , was under Soviet influence , and Warsaw , its capital , was surrounded with the Warsaw Wall .
The United States invested heavily in the development of Poland , especially its military industrial complex .
Poland east of the Vistula and Poland             , was under Soviet influence , and Warsaw , Poland 's capital , was surrounded with the Warsaw Wall .
The United States invested heavily in the development of Poland , especially its military industrial complex .