d. Sending money for foreign investments.
Explanation:
The sub-Saharan African countries, in general, tend to be the least developed countries in the world. They have widespread poverty, corruption, terrible politicians (often dictators), lack industry, lack infrastructure, and do not make great use of their vast resources. This of course can change, as the majority of these countries have huge potential for multiple changes will need to be done for it.
Something that will not help the progress of these countries during the 21st century is sending money for foreign investments. Every single possibility needs to be used so that the countries start to develop and strengthen internally, and that would be extremely hard and slow. Sending money abroad for investments will not be a good method because those money will be more than needed in the country itself, for developing infrastructure and industry.
Answer:
How they made it possible they were immigrants so cheaper labor.
Exemplified and failed expansionism
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The United States has almost doubled their territories in the period of around fifty years.
The proportions of the USA not only went up, they also went up in bureaucratic problems synonymous with territorial development in two different purchases, one of Thomas Jefferson in 1803, and the other of James K. Polk in 1848. Still a developing nation, Jefferson encountered a host of challenges in administering such a huge expanse of territory, but deftly transformed the Louisiana Acquisition into one of greatest achievements of the United States.
Rather, Polk gained his territories by means of deviants and refused to see the repercussions of brutal civil war that ultimately would engulf the Union. Two examples of leadership are seen in the United States ' great expansion, Thomas Jefferson's masterful, brave conduct, as opposed to James K. Polk's reckless and hasty behavior.
The 19th Amendment amendment states that 'the right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of sex'.