Final answer:
The division in Cyprus between Greeks and Turks is called the Green Line, which came into existence after a civil war in 1974 and is monitored by the UN.
Step-by-step explanation:
The type of border that exists in Cyprus and separates the Greeks and Turks is known as the Green Line. This demarcation line was established after the civil war in 1974 and is monitored by the United Nations. The Green Line divides the island into the Greek Cypriot controlled south and the Turkish Cypriot controlled north. The latter region has declared itself as the Turkish Republic of Northern Cyprus, which is only recognized by Turkey. Despite this declaration, the entire island is considered one nation, the Republic of Cyprus, by the UN and the international community.