What limits does genomic testing have as a historical source

The limits of genomic testing are connected with tracking the possibilities of developing a certain disease. It used to be believed that genes were the most importan responsible factors for causing self-immune diseases, but now it has been prooved that the environment, bad habits and nourishing, among other factors, play a more important role in that aspect.

hitler was elected as a strong leader by germans who felt angry following the treaty of versailles.

the language dates from the contacts of arabian traders with the inhabitants of the east coast of africa over many centuries. under arab influence, swahili originated as a lingua franca used by several closely related bantu-speaking tribal groups.