third way to determine how many equivalent protons there are is to look at the atom attached to. the proton (usually a carbon) and observe what that atom is bonded to, and then the atom bonded. to that, all the way until a difference is observed.
The goal of imperialism is  to exercise economic and political control over a dependent territory. Such control is often accomplished through settlement, sovereignty or less direct methods.
Another driving force behind imperialism was political competition. Document A is a map of Africa that shows where each European country overtook in 1884-1885.The 7 European countries that held African colonies by 1914 were the British, French, German, Italian, Portuguese, Belgian, and the Spanish.