Answer:
Qin Shi Huang standardized writing, a crucial factor in the overcoming of cultural barriers between provinces, and unifying the empire. He also standardized systems of currency, weights, and measures, and conducted a census of his people. He established elaborate postal and irrigation systems, and built great highway
Explanation:
Most states have laws requiring that you pass under bridges at a slow speed. You should always reduce your speed and proceed with caution near any bridge or man-made structure that decreases visibility and passage. Many bridges are high enough to allow normal boat passage.
The answer is D because the long march was a huge factor in world war 2
D) cognitive, solving puzzles develops those skills
