Замени слово «известный» (из 3-го предложения) близким по значению словом. Запиши это слово.

Children enjoy playing since the first humans walked on the Earth thousands of years ago. Playing seems to be an important way for children to learn how to work together. It also helps them to find out how the world works. Indeed, many scientists think that one of the best ways for children to learn a foreign Language, for example, is to learn while playing games. Children play games and play with toys, but what is the differences between games and toys? Firstly, toys don't have/haven't rules or winners and losers most games do. Secondly, a toy is always a physical thing that someone has made. Some games, like Monopoly or football need physical equipment but others, like word games, do not.

Ivan III Vasilevich, who is also known as Ivan the Great, is an interesting figure in Russian history. Ivan had great political skills and became a popular leader, uniting many princes in the surrounding area. Ivan the Great’s greatest achievement was to free Russia from Mongol control. In 1480, Ivan made an important announcement, telling the Mongols that he would no longer pay them the money they wanted. Both sides came together to fight, and it was unclear which side was more powerful. However, before the battle, the Mongols retreated because of the strehgth of Ivan’s army and the battle never happened. The Mongols had, in effect, lost and from then on, Russia was a free country.