I am unsure of how to answer this completely, but I will give it my best.
It could be meant that there is no physical boundary holding them apart and that the world's oceans simply flow into each other rather than being separated. Such as the pacific and Atlantic. They are not held apart, they flow around countries and flow into each other at a certain point.
Umm ;-; I don’t understand your question
The states that border Mexico is: New Mexico, Texas, Arizona, and California. Hope this helps!
Answer:
The Moon doesn't make its own light, it just reflects the Sun's light as all the planets do. We see the Moon go through a changing cycle of phases each month due to its orbital motion around Earth and the changing geometry with which we view it.
