What is the crest of a wave? the distance between two wave troughs the speed of energy of the wave the highest part of the wave the lowest part of the wave

How has the geography of india made it difficult for its people to expand before modern technology?

What statement about charlemagne is not true? a. charlemagne's empire collapsed during his rule b. charlemagne sent missionaries throughout europe c. charlemagne encouraged the arts and education d. charlemagne ruled much of western europe a. charlemagne's empire collapsed during his rule

The separation of northern ireland from the republic of ireland is an example of