We only know about extinct groups like dinosaurs, ammonites and trilobites through fossils. Some animals and plant are only known to us as fossils. By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other.
Andrew Jackson (1767-1845), seventh president of the United States, symbolized the democratic advances of his time. His actions strengthened the power of the presidential office in American government. The second crowd that showed up at the mansion was made up of Jackson supporters who were dressed in their best clothes.
they both have democracy government style because they let the people make governmental decisions. Both presidents have similar government system and branches of government