What part of the globe is land? Which city withstood the 900 day Nazi blockade, but did not surrender?

So, land occupies only twenty-nine percent of the earth’s surface, the rest is water. But it was Leningrad that withstood such a long blockade, now this city is called St. Petersburg. This terrible event began in September 1941, and it ended on January 27, 1944. To be precise, the blockade lasted not nine hundred days, eight hundred and seventy-two days.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.