It’s D. It created the first system of irrigation
hope this helps!!
Answer:
The answer is B) They have continued to improve and are still used today.
Explanation:
During the Second World War there were major technological changes, new instruments, armaments and products were created that are still valid today and work is continuing on their improvement. A clear example would be the development of the first jet plane; and of giant magnitudes which is the ancestor of HERCULES. Another example is the creation of two types of internal combustion rockets which were created by Germany and were called as V-1 and V-2; which were used mainly in English territory.
I hope I helped, please correct me if I'm wrong!
Answer:
Right option:
It led to the spread of diseases in the Americas, killing thousands of Native Americans.
Explanation:
The Indian peoples of the New World didn´t have anti-bodies that could help resist illnesses that were brought by the Europeans such as the smallpox. These new viruses and bacteria decimated Indian people. Not thousands, but millions of Indians died because of new diseases spread by the Europeans colonizers.
The step by step process of designing a research question goes like this:
Choose an interesting general topic.
Do some preliminary research on your general topic.
Consider your audience.
Start asking questions.
Evaluate your question.
Begin your research.
