Which events led to change in europe and asia during the late middle ages? choose all answers that are correct.
a. fewer people lived in cities or towns, so farm production increased.
b. famine and plague spread death across europe.
c. christians clashed with muslims in long and devastating wars.
d. learning declined, strengthening feudalism.
e. merchants moved between europe, north africa, the middle east, and asia, carrying both goods and new knowledge wherever they traveled.