In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

WHat is opposite of closed?, Context: On 1 January 1967, Yugoslavia was the first communist country to open its borders to all foreign visitors and abolish visa requirements. In the same year Tito became active in promoting a peaceful resolution of the Arab–Israeli conflict. His plan called for Arabs to recognize the state of Israel in exchange for territories Israel gained.
open