What was the primary goal of the emergency quota act of 1921?

Limiting immigrants to come into America was the primary goal of the Emergency Quota Act of 1921.

Hi! after fertilization occurs, the zygote goes through mitosis and then differentiation (aka specialization of cells) to have a variety of cells that perform different functions. this allows for the creation of tissues and so on, all of which were once stem cells with no specific function.i hope i !