Which of the following might cause a new core area to develop?

A rise in the cost of living
New transportation infrastructure
The discovery of natural resources
Tariffs and barriers on trade
I and II
I and III
II and III
II and IV
III and IV

It would be if we could see the map

1.0 larger it be exact

Europe needs to build a trump-like wall that will spread across europe making it impossible for migrants to cross they need to spread pig guts all over this wall so the muslims will never consider crossing into europe..you might be asking "can't they just fly over with planes? " well yes they can so we will install thaad missile protections system to shoot down any aircraft that violates europe's air fourth would be to start a fourth reich in germany.. last but not least.. make europe great again!

The correct answer is (a.) in the coming years, the reyes family will save money because solar power requires little maintenance, and the energy used is free.