In your own words, explain a crucial piece of evidence that ptolemy used to construct his explanation of the solar system.
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(like 4 sentences)

by 1890, the united states had by far the world's most productive economy. american industry produced twice as much as its closest competitor--britain. but the united states was not a great military or diplomatic power. its army numbered less than 30,000 troops, and its navy had only about 10,000 seamen. britain's army was five times the size of its american counterpart, and its navy was ten times bigger. the united states' military was small because the country was situated between two large oceans and was surrounded by weak or friendly nations. it faced no serious military threats and had little interest in asserting military power overseas.

pennsylvania pennsylvania colony was a proprietary colony founded when william penn was awarded a charter by king charles ii in 1681. he set up the colony as one of religious freedom. the government included a representative legislature with popularly elected officials. all taxpaying freemen could vote.

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