What is a reason timelines are organized chronologically? to make the events easier to read to identify the importance of the events to help determine the causes and effects of events to provide an in-depth understanding of events

to help determine the causes and effects of events

Explanation:

Chronology refers to the arrangement of events in the order in which they occurred. The arrangements of events in this manner helps to determine the causes and effects of events.

Determining the cause and effects of events gives us an idea of things that happened that led to the occurrence or the differences of an event. This however helps us have a better idea of the history and have a clearer understanding.

d. dr. francis collins

the correct answer option is: weapons.

explanation:

tensions rose as the two opposing superpowers competed for 'weapons'.

referring to the cold war (1945-1991), the two superpowers, usa and ussr, experienced a phase of struggle and conflict with each other. these two superpowers considered each other as a threat to their survival and thus opted for policies to strengthen their positions.

the two superpowers never went to war with each other directly but competed for weapons to preserve their positions.