By have an over population of people all over which we would need to make more rules too keep violence under control
A peninsula is an area of land (like Florida) that hangs off of land like an island but one part's connected. A tundra is wide open, flat land, like the Alaskan Tundra. A mountain range is a long string of mountains side by side like the Appalachians. And for mountain barriers (I'm not sure I fully understand but) it seems like theirs more dew and wind for example on one side of the mountain and the others the opposite because the mountain blocks it (not completely sure bout the mountain part but i think its right!). Ocean currents is the force of the wind blowing up against the sea, helping to create the waves, and of course the pull of the moon! Hope I helped! Sorry I can't help with the wind barriers part!
It made it a lot harder for them to immigrate
The acceptable reasons for study history is B.) It helps support common cultral understanding.
Why?? You would be accepting and learning new and different things about different people. And learning so much about humans past and how they worked and did things differently. So then maybe we can understand why some people do certain things. Like quanza or something. Or hanuukah. ( Sorry i know i proably spelled those wrong)
Anyway i hope this helps!! And can i please get brainliest.