How is law and order maintained in a non-centralized state​

What group has historically made up the largest portion of immigrants in mexico?

How do ocean currents affect temperature? check all that apply. they carry cold water from the poles to the equator and cool air over land. they flow north and then south below the equator. they flow south and then north above the equator. they move warm water from the equator to the poles and heat air over land. they move east to west and create prevailing winds. they move west to east and create seasonal winds.

Suggest 3 different reasons why there is an ageing population in the uk .