During the american revolution, why did many african-american slaves fight for the british and against the colonists?

What challenges did political parties face during the election of 1800

According to some historians which marks at the beginning of the us civil war

Some organisms have a large geographic range. for example, the norway rat lives on every continent except antarctica. a population of norway rats is the number of rats in one particular area. do you think it’s scientifically possible for a population of norway rats in north america to carry different genetic mutations than a population of norway rats in africa? do you think it’s possible that they carry some of the same mutations? what types of information can scientists learn by studying the genomes of these two populations of rats?