In the communist manifesto, karl marx hypothesized that capitalism would fail if workers

...if  workers united and revolted.

Explanation:

In the Communist Manifesto, Marx and Engels incite the workers of Europe to unite under the flag of communism —since they have nothing else to lose and everything to achieve— in order to revolt against unjust working and living conditions, seize the means of production, production, and capital away from landowners and capitalists, and equally redistribute them amongst the proletariat (the workers).  

the big stick policy was to still look powerful, and be nice at the same time. the big stick policy was also to countries who were at war, find peace with eachother.

the dollar diplomacy was to expand american business and get it to latin america, for that would be good for the economy.

you my friend, your regards.

agubaba khaleekha.

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.