Why did nikita khrushchev order the construction of the berlin wall?

The building of the Berlin Wall was for namely preventing the exodus of East Germans from East to West Berlin then to West Germany.

The eastern area of Germany that was held by the Soviets became the so-called German Democratic Republic (RDA), and the other three formed a single area, which was the Federal Republic of Germany (FRG).

In the following years, the western zone began to prosper while the Soviet side suffered economic problems. This, caused millions of Berliners who lived under the communist regime to migrate to West Berlin.

It is for this reason that Nikita Khrushchev from the GDR orders the construction of a provisional wall that divided the city in two.