Scientists typically use carbon dating to gauge the age of fossils and artifacts. This only works on objects that were at one time living, because all living objects contain carbon. By measuring the amount of carbon left in an object, scientists can determine how long it has been dead.
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Answer:
C. being isolated from the world
cause if you know Japan had many things they wanted to keep for there self that is when they did the open door where the U.S let everyone trade with Japan and China
Explanation:
These states were known as the board states and they close to the nation's capitol. Lincoln was president during this time and was known for jailing officials in these states. That had the power to decide whether or not the state would join the union or the confederacy.
Answer:
Technological developments in agriculture have been influential in driving long-term growth in U.S. agricultural productivity. Innovations in animal and crop genetics, chemicals, equipment, and farm organization have enabled continuing output growth while using much less labor and farmland.
Explanation:
