A secondary source could be someone that maybe discovered the body or is doing evaluations to see why or how he died, like a doctor for instance it would be a secondary source because............the doctor was not there and he did not watch so....and if he wrote about it then that would be a secondary source! :) <3 hope this helps!
Answer:
<em>Architecture. From military structures such as forts and walls (including the spectacular Hadrian's Wall) to engineering feats such as baths and aqueducts, the most obvious impact of the Romans that can still be seen today is their buildings. ... The Romans built in stone, in straight lines and in a grand scale.</em>
Explanation:
<em>The fall of Rome also paved the way for another major part of Europe's history: feudalism. When Rome fell, Europe fell into a state of constant warfare. The new kings not only wanted to tax their populous, but also wanted them to fight during times of war.</em>
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Answer:
D) The Harappans used sun-dried clay bricks to build their structures.
