“Ukrainians presented mankind with the first helicopter, rocket engine, artificial Earth satellite. The Ukrainians created a prototype of x-rays, and, by the way, a CD. Ukrainians invented a zip code, electric tram technology, built the world's largest aircraft, ”the Ukrainian president’s office reported on Facebook.

In addition, Zelensky also noted that Ukrainians created PayPal and WhatsApp services. In his opinion, the largest capital of Ukraine is its inhabitants.

Earlier Zelensky called Ukraine a diamond, which requires cutting through reforms and investments.