I believe the answer to this question is option B Schizophrenia.
<span>Aida should specify which sites gave her these statistics. Google search is too vague.</span>
A private good is excludable and rival in consumption.
<u>Option: C</u>
<u>Explanation:</u>
Public products are produced for the wellbeing of the people at no expense by the government or by design. Yet private goods are the ones which private firms produce and sell to generate a profit.
If nature or government offers public goods, it is the businessmen or entrepreneurs who create private goods. A good can be excluded if the manufacturer of that good can prevent people who do not pay from buying it. If it can not acquired at the similar time by more than one individual, an item is rival in consumption.
Russia offered to sell Alaska in 1859 because they were in debt from the Crimean War. The U.S. did not initially make this purchase because of Civil War debts.
At the time of the purchase, America was still in a expansive mood. No one knew of any resources in Alaska then. Oil was not a big one for anyone. Alaska was even called "Stewart's Folly" (Stewart was a secretary of the interior) and a waste of federal money. (The dang place went for about 10 cents per square mile!)
Stewart wanted to simplify the map of North America and to block the British in Canada from further expansion as the USA and the British Empire were still not the best of friends.
Also, the Russians felt they could never have a firm hold on such a distance colony, needed some cash in a hurry because of a pending war with the Ottoman Empire and the Tzar on the throne at the time was a bit wacky.
It was strictly a move by the USA to secure the last major piece of real estate still open in North America.
I hope this helps:)
Steamboats. Steamboats positively effected the world because they made the transportation of goods more efficient and economical. Travel time was cut in half and were a compliment of the railroads, both for commercial and passenger transportation. Steamboats were independent on the wind speed and direction.