The use of iron and steel is very much common in most of the infrastructure being built today. The new methods developed for the production of these essential metals have helped hasten and loosen the supply for the demand. By that, buildings have sufficient supply of these metals.
Answer:
Al-Battani refraction had little effect on his meridian observations at the winter solstice because, at his more southerly site of ar-Raqqah, the sun was higher in the sky. Al-Battani's Kitab al-Zij was translated into Latin as De motu stellarum.
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Explanation:
I think the last one is correct because Robert created ways trough Missouri River to get faster to the ocean
