What did president roosevelt introduce to retirees

The correct answer is:

Social Security Act.

The Social Security Act established a basic right to a pension in old age, and insurance to battle unemployment.

It was signed into law by President Franklin D. Roosevelt on August 14, 1935, during the Second New Deal, laying the foundation for the modern welfare system in the United States, focused on providing care for children, the elderly and the unemployed.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.

these civilizations were located around fertile rivers, where they could produce an abundance of crops