What were conditions like on the middle passage for the slaves

Slaves' treatment was horrific because the captured African men and women were considered less than human; they were "cargo", or "goods", and treated as such; they were transported for marketing.  

Some of the conditions during the African’s transportation to the new world were:  

•Overcrowding combined with malnutrition and disease in the ships.  

•Lack of drinking water. The crew sometimes decided to drown some slaves at sea, to conserve water and allow the owners to collect insurance for lost cargo.  

•Slaves sometimes decided to kill themselves by jumping into the water willingly.  

•Slave punishment and torture was very common, as on the voyage the crew had to turn independent people into obedient slaves.

•Slaves were punished with Whipping and use of the cat o' nine tails were a common occurrence; sometimes slaves were beaten for "melancholy".

•Pregnant women on the ships who delivered their babies aboard risked the chance of their children being killed in order for the mothers to be sold.

•As a way to counteract disease and suicide attempts, the crew would force the slaves onto the deck of the ship for exercise, usually resulting in beatings because the slaves would be unwilling to dance for them or interact. These beatings would often be severe and could result in the slave dying or becoming more susceptible to diseases.

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.