The Thames has been very significant for the development of London as a financially and culturally important metropolis. The river provided water to people, encouraging the first settlements. It also provided a route for trade to be achieved. In terms of trade, the estuary at the mouth of the Thames was also important because it allowed ships to reach far inland, which contributed to commerce.
<span>The only state added after 1800 that is east of the Appalachians was Florida. It was added in 1845, due to the numerous Indian problems, poor soil and the fact it wasn't a territory until 1822.</span>
