Answer:
The pact with Stalin meant that Hitler would not face a war on two fronts once he invaded Poland, and would have Soviet assistance in conquering and dividing the nation itself. On September 1, 1939, Hitler invaded Poland from the west; two days later, France and Britain declared war on Germany, beginning World War II.
Explanation:
Staph, as well as other pathogens, may change genetically by means of plasmids. Plasmids are DNA molecules which carries a rich diversity of genes that benefit the host cell. In this specific case, the host cell is the Staph bacteium. Among other things, plasmids carry antibiotic resistance genes.
<span>To illustrate how an ordinary Staph aureus bacterium can evolve into a methicillin-resistant bacterium, let's use the patient who doesn't finish an antibiotic prescription of penicillin. The Staph is weakened but not killed. Bacterial plasmids work quickly to produce genes that make the bacteria resistant to the drug. These parent bacteria replicate and pass on the plasmids, along with the DNA they contain, to the "daughter" cells. Voila! Methicillin-resistant Staphylococcus aureus! With the new DNA in place, each subsequent generation of Staph will also be resistant. But do not think for one moment that MRSA is otherwise somehow different from Staphylococcus aureus. MRSA IS Staph. Staph with an added feature. </span>
It was easier for goods to be transported across country
The people in Africa, sub-Saharan Africa more specifically, did not had their own written languages throughout their history. This meant that they were not able to preserve their cultural heritage in a written way, and that of course can be a problem on the long term. In order to preserve their culture, the African people used the oral way of keeping the traditions alive, mostly by telling stories to the younger ones, thus it was continuing from one generation to other. Also, the music and the dances where crucial for the preservation of their culture, by being able to see and hear the sounds and dances of their ancestors, they were able to easily accept and be interested in their culture, thus learn it, and continue to keep it alive.
