Answer: he Supreme Court has stated such an amendment is unconstitutional, thus blocking its ratification
Explanation:
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I would say that first perhaps in Linnaeus's time there were mostly just the plant and animal kingdoms, but with time and with some key world explorations such as those of Von Humboldt and Darwin in South and Meso-America it became obvious that there were a plethora of types of plants and animals that could be divided on the basis of their particular physical characteristics, environment (land water or oceans for example and plains or mountains and different elevations and latitudes) so some more new types of kingdoms were introduced like mammals, fish, arthropods etc.
There are many different kinds of evidence that archaeologists, anthropologists, and paleontologists study to find out how prehistoric people lived, but the most effective are bones and artifacts such as tools.
Answer: because Texas allowed slavery, Northerners were opposed to allowing another slave state into the union.
Explanation: