The correct answer is - natural selection.
This is a typical case of natural selection, where we have a group of people that have similar physical traits, that are selected and than isolated from any external influence, so with interbreeding they manage to keep their physical traits for generations to come and thus create a population that resembles their initial ancestors.
The great depression began after ww1, and there was a continuing cycle of debt for them. ( falling farm prices)
hope this helps :)
Answer:
Because the British East India Company had possession or Control on tea sales in the colonies and they still had to pay taxes on the tea
Created a Domino effect of other Countries Declaring their independence.