the correct answer to this question is the letter B. Revolutionaries formed weak constitutions
Most uprising or revolution fail in 1848 because citizens are discontented at poor governance and a series of republican revolts against European Monarchies which ended in failure and suppression. It failed because there was military support of the rulers and lack of strong allies and support and most of all the division among the revolutionaries are not that firm.
The great pyramids at Giza are remarkable structures because the pyramids are still the most massive structures by human effort.
The need for slaves because Britain was opposed to slavery i think
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The “Era of Good Feelings” marked a period in the political history of the United States that reflected a sense of national purpose and a desire for unity among Americans in the aftermath of the Napoleonic Wars and the War of 1812.
Public life responsibilities and duties could be divided in two groups which are Social and Professional responsibilities.
Social responsibility is the must that a community member have to promote the welfare of all the people around them while the professional responsibility is to put the knowledge for the common well, knowing the possible risks that a technical decision will have as a consequence for the community.