How did geography hinder (stop) the unification of Japan prior to (before) the Tokugawa Shogunate? (39a) A.
lack of farmland forced trade with other countries

B.
abundant rivers helped transportation

C.
mountains made unity difficult

D.
islands protected Japan from invasion

what if dreaming is our natural state, and we only wake to collect information for our dreams.

if we were to fully devote our bodies, minds, and consciousness to dreaming, how far would it go? we could essentially reach a new plain of existence were we here in these bodies are sleeping, but an entire universe of endless possibilities, happening right in our head.

that could be the way we reach some of these scientific feats that we all seem to want. we could connect to many other things. that could be the way we connect to extra-terrestrial, and even spirits of the dead.

dreaming is something that humans take for ranted, when really, it could be the key to the universe.

the columbian exchange, also known as the columbian interchange, named for christopher columbus, was the widespread transfer of plants, animals, culture, human populations, technology, and ideas between the americas, west africa, and the old world in the 15th and 16th centuries, related to european colonization and trade following christopher columbus's 1492 voyage. invasive species, including communicable diseases, were a byproduct of the exchange. the changes in agriculture significantly altered and changed global populations. the most significant immediate impact of the columbian exchange was the cultural exchanges and the transfer of people between continents.

the new contact between the global population circulated a wide variety of crops and livestock, which supported increases in population in both hemispheres, although diseases initially caused precipitous declines in the numbers of indigenous peoples of the americas. traders returned to europe with maize, potatoes, and tomatoes, which became very important crops in europe by the 18th century.

the term was first used in 1972 by american historian alfred w. crosby in his environmental history book the columbian exchange. it was rapidly adopted by other historians and journalists and has become widely known.