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In page History of Croatia:

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Students and military personnel were encouraged to visit other republics to learn more about the country, and all levels of education, including secondary education and higher education, were free. In reality, the housing was inferior with poor heat and plumbing, the medical care often lacking even in the availability of antibiotics, schools were propaganda machines and travel was a necessity to provide the country with hard currency. The propagandists, who want people to believe "neutral policies" equalized Serbs and Croats, severely restricted free speech and did not protect citizens from ethnic attacks.[citation needed]