Answer:
c. Buildings that were built with logs from mountains about 50 miles away
Explanation:
Buildings made of logs from mountains about 50 miles away are the evidence of traders over distances because people need a shelter at a place for trading and they form buildings with logs.
Traders migrate to other places for trading nearby 30-50 miles, they make the same designed building for shelter and move ahead after their trade is done and leave the building as it is.
Hence, the correct answer is "c".
<span>c) movement from rural areas to urban areas
d) decreased number of immigrants to the united states
migration movements can be described in two ways: there was a migration from the rural area to urban area, where industries offer better and steadier jobs than rural one. second, there was a migration from countries towards the US, as the country was an example of what technology could do and many hope to find a better life there.</span>