Why did the mongols launch the deadly attack on nishapur

In the beginning, the Mongols were a peace-loving, pastoral people who only wanted to be happy in their own lands. However, Muslims started invading their lands and waging wars which obviously they were not okay with. It culminated in the city of Nishapur where Muslims revolted against the Mongol rule. This is why Genghis Khan's daughter sentenced everyone to death, which is how thousands of people were murdered.

The first immigrants to settle in what is now the united states were the ancient ancestors of modern native americans. the precise routes of those first north american immigrants are disputed, but there is no uncertainty about the fact that every human being on the continent is either a recent immigrant or a descendant of earlier immigrants. since the first immigrants came here from asia more than thirteen thousand years ago, there have been four large and easily recognizable modern waves of immigrants into the united states.

Ibelive it  is a yazoo tributary