This is a common misconception and is an exaggeration. No country is wider than the moon.
The moon has a diameter of 3,474 kilometers, while the Earth's widest country, Russia, has a width of about 11,000 kilometers from its westernmost point to its easternmost point.
However, compared to the vastness of space, even our planet Earth seems like a tiny speck, let alone any country or landmass on its surface.