I believe the correct answer from the choices listed above is option C. An important factor in the development of the British Empire in the 19th century was its naval supremacy. At this time, it emerged as the principal naval and imperial power (with London the largest city in the world from about 1830). Hope this answers the question.
Diseases introduced by white settlers.
The main reason for the wipe-out of Native Americans was the threat of the diseases introduced by White Europeans. This ended up killing many Native Americans across different tribes, as they had no immunity to these diseases and had never dealt with these kinds of illnesses before. This was a rampant problem and attained the Native Americans quickly after the European settlers arrived.
Answer: b.) glaciation led to the development of Louisiana's extensive system of bayous and swamps.
Explanation: This seems like the best answer choice so I think it is B.
It was Alexander I.
He was a Russian Tsar, he fought Napleon, I believe.
