Answer:Phase change materials (PCM) are substances that absorb and release thermal energy during the process of melting and freezing
Explanation: when it cools it changes like ice melting
Answer: A minority party of Cherokees concluded that their only course was to negotiate a removal treaty with the United States. ... The treaty, signed at New Echota, Georgia, in December 1835, established a deadline of two years for the Cherokees to leave their homelands.
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It was Spain. Cristobal Colon (Colombus) petitioned Portugal, England, and finally Castile-Aragon (Spain) and after 30 of asking monarchs, Queen Isabella of Castile funded a voyage to China from Europe in 1492 AD.
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In the United States and in other western democracies, the "Unwritten Constitution" includes the practice of "issuing currency," since this is not explicitly mentioned in the Constitution.
