Explain how sharecropping exploited former slaves

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.

Which of the following events contributed to the start of the war of 1812

The classification of people into groups who have little contact with each other is often the first step toward genocide. what are some of the actions societies can take to avoid this kind of classification?