During the 1800s, the movement of large numbers of immigrants from many different countries into large American cities resulted in the rapid
growth of ?

Select one:

ethnic/cultural neighborhoods

plentiful and affordable public housing

effective public health
programs

public parks and recreation areas

I need more information

Explanation:

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.