He means that whatever we do is for mankind. All the work is for the development of the humans.
Chinese troops entered Tiananmen Square on June 4 and fired on civilians.
True
In port cities everywhere, the Black Death began to strike. In Venice, 100,000 people died in total, with as many as 600 dying every day at the peak of the outbreak. In 1347, the disease worked its way to France and Paris lost an estimated 50,000 people.
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The environment was better in the West Indies than in the English mainland colonies.
Sugar cane requires a hot tropical climate to grow and also needs a high number of workers who can tolerate the conditions.
The English mainland colonies ranged from current day Maine to Georgia, north to south, and the Atlantic coast to the Appalachian Mountains (east to west). In none of these areas was the weather warm enough for a long enough period of time to grow the sugar cane crop. The West Indies are in the Caribbean and their location provided the warm, tropical environment. Indigenous peoples were first used to work the crop but they were too familiar with the land and not all with the crop. African slaves were brought to the Caribbean to farm the sugar cane because they could tolerate the weather and were familiar with the crop.