What was the name of the Union between Egypt and Syria in the 1950s?

What was the name of the Union between Egypt and Syria in the 1950s?

سن 1950 کی دہائی میں مصر اور شام کے درمیان اتحاد کا نام کیا تھا؟
Explanation

The union between Egypt and Syria in the 1950s was called the United Arab Republic (UAR).

The UAR was a political union that lasted from 1958 to 1961. 

The UAR was formed on February 1, 1958, when Egyptian President Gamal Abdel Nasser and Syrian President Shukri al-Quwatli announced the merger.

The UAR ended on September 28, 1961, when Syria seceded after a military coup.

Egypt continued to use the name "United Arab Republic" until 1971, when it was formally dissolved by Anwar Sadat.