Answer:
The most pressing points of tension with European nations were eliminated during the first half of the century: purchase of the Louisiana Territory from France in 1803 gave the United States control over the heartland of the
Explanation:
He supported it because he believed that the powers enumerated in it balance each other out and nobody could become tyrannical by exploiting it. He refers to it as an open door because it can be amended meaning that if something needs to be changed because the spirit of the time has changed, it can be done while keeping the good things.
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The Great Zimbabwe was a country on the territory of where the modern day nation of Zimbabwe is located. It had access to the Indian Ocean and a great strategic location, especially when it came to trade, as it was an important place in the trade routes on the ocean.
The people of Zimbabwe had a strong economy, and it was largely based on trading, cattle, and crops.
Three very important and very profitable things that the people of Zimbabwe traded were the ivory, gold, and copper. All three being in abundance on their territory, or in the territories in close proximity, and all of them being in high demand and being very well paid for.
Gutenburg's printing press was such an important invention, because before he invented it, people would either write stuff all by hand, or make some stamping system. If Gutenburg hadn't invented the printing press, we wouldn't have printers to print things out!
Extra:
Gutenburg designed the printing press in a town called Strasbourg, France. he built the actual thing in Mainz, Germany.