In the seventeenth century, european activity in the americas was largely driven by mercantilism. according to
the theory of mercantilism, what must a nation do in order to build economic strength?
invest heavily in technology
encourage entrepreneurship
export more than it imports
eliminate all barriers to trade

export more than it imports

Explanation:

The colonial powers during the seventeenth century were led by the economic principles of the mercantilism. This economic principle was basically suggesting that in order for a country to gain as much wealth as possible, it needs to produce a lot, export more than it imports, and use protectionism as a defense mechanism. In order to accomplish this, the colonial powers engaged into mass production of goods that were in high demand and were sold for good price, resulting in creation of enormous plantations of cash crops. Some of the cash crops that contributed to accumulation of wealth through trade were the sugar cane, cotton, indigo, tobacco etc. Something else that this economic principle suggested was the creation or opening up of new markets, and the result of that was conquering new territories, where both the resources were used, and it was a new market for the products, though this came slightly later in the history.

he was in office from 1929 to 1933 and served as a reform governor, promoting programs to combat the economic crisis besetting the united states at the time. in the 1932 presidential election, roosevelt defeated republican president herbert hoover in a landslide.

explanation:

1. ford: gerald ford´s presidency, from 1974 to 1977, faced high inflation, named it public enemy nº1, and created the win program (whip inflation now).

2. carter: president from 1977 to 1981, carter had controversial poitions over abortion, but yet, he enforce the roe vs wade decision, which had pro-choice content.

3. reagan. for his eloquency and powerful speeches in his mandates, from 1981 to 1989, reagan earned this nickname, “the great communicator” .

4. george h w bush: despite many presidents had important roles in managing and trying to end the cold war, it was in bush sr's mandate that the berlin wall was materially destroyed, and he was visited by gorbachev in the uspresident from 1989 to 1993.

5. clinton: defense of marriage act. clinton signed this controvesial act, which defined marriage and spouses in strict heterosexual perspective, that was later declard unconstitutional by the us supreme court.

6. george w bush: in the begining of his presidency, which lasted until 2009, bush jr faced the greatest terrorist attacks in us and probably the worlds history, in september, 11 of 2001.

7. obama: in attempts to cease a great economical crisis, barack obama signed the controversial recovery act in february 2009, which handled 780-billion dollars.