Hundreds of different types live on our teeth, gums, tongue and other places in our mouths. Some bacteria are helpful. But some can be harmful such as those that play a role in the tooth decay process. Tooth decay is the result of an infection with certain types of bacteria that use sugars in food to make acids. Over time, these acids can make a cavity in the tooth. Back to Top. What goes on inside our mouths all day?
1830 Jackson supporters and Congress push through the Indian Removal Act it forced many Native Americans to move west of the Mississippi whites do not mind turning the island â¦ over to Indians because they thought the region was a vast desert.
The removal of American Indian tribes from lands east of the Mississippi River to what is now the state of Oklahoma is one of the tragic episodes in American history. Early treaties signed by American agents and representatives of Indian tribes guaranteed peace and the integrity of Indian territories, primarily to assure that the lucrative fur trade would continue without interruption.