What land forms were created by the shifting of our tectonics plates

Fold Mountains - Fold mountains are created when two plates collide causing the land to ripple upwards. Rift Valleys - Rift valleys are formed when plates move apart. They happen because the crust is stretched so much that it causes cracks to develop.

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.

just like you man, i personally think its either c or d

explanation:

but good luck with the test man