How did world power shift during the industrial revolution?

Which statement describes domestic terrorism?

It can be inferred that the dramatic increase in defense spending by germany was the result of. (a) attempts by great britain to take german colonies. ( b) fear of a two-front war against france and russia (c) the need to put down a communist rebellion (d) a competition with the allies to produce atomic weapons

What features of the electoral system support the existence of a two party system and analyze one of these features and explain its role