What are the differences and similarities between the headlines? Headline from the Past
Silk Road Binds Chinese, European Trade

Headline from Modern Time
European Union Lowers Trade, Travel, Cultural Boundaries Between Member Nations

are their options?

otherwise i can't

the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful. 

nations must cooperate to bring about and maintain world peace.

nations must not wage wars or commit war crimes in a desire to control other nations.

i think i know which options you have but if these aren't options let me know

a stronger central government  

its what they are