Why were the first civilizations developed in river valleys?

Put these events in the correct order #1-4. cause: world war 1 caused heavy casualties and property damage throughout europe. many people barely had enough food to eat or coal to stay warm. what happened next? question 1 options: communism soon spread to many small countries near russia, and eventually spread to cuba, china, and vietnam. led by vladimir lenin, a group called the bolshevik party gained the support of the people and overthrew russia’s monarchy, killing czar nicholas ii and his family. russia, now led by lenin, became the first communist nation in history. russian citizens, who were starving and poor, became angry at the ruling class who held all of the nation’s wealth. 1 2 3 4

What was the total number of americans killed in the korean conflict

Joanna eats 1/8 of a pepperoni pizza, 2/8 of a pizza and 1/8 of a pizza how much of one whole pizza does joanna eat? how many slices are left