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.
FROM AFRICA TO THE AMERICAS. In the 360 years between 1500 and the end of the slave trade in the 1860s, at least 12 million Africans were forcibly taken to the Americas - then known as the New World to European settlers. This largest forced migration in human history relocated some 50 ethnic and linguistic groups. Only a small portion of the enslaved - less than half a million - were sent to North America. The majority went to South America and the Caribbean.