President barak obama issued two documents related to critical infrastructure that increase the national focus on issues of security and resilience. these two
documents are:
select one or more:
a. presidential policy directive-21: critical infrastructure security and resilience.
b. presidential policy directive-2: implementation of the national strategy for countering biological threats.
c. executive order 13636: improving critical infrastructure cybersecurity.
o d. executive order 13616: accelerating broadband infrastructure deployment.

when studying cause and effect, historians usually group the causes into different categories. for example, cultural causes reflect how a society’s literature and art convey the way the society saw itself in relation to the rest of the world. another resource that historians use to understand society is pop culture, which tells them the trends and ideas that are preferred by the common people. when studying cause and effect, it’s important to remember multiple causation, or the idea that an effect could have several causes and vice versa.  

the correct option is “cultural causes” since art and literature are related to the culture of a place. culture is determined by literature, art, music.

the correct option is “pop culture” since it reflects the likes and ideas of common people whereas the rest of the options do not focus on common people.  

the correct option is “multiple causation” since it refers to the idea that events are caused by multiple reasons, not just a single one.  

it maybe, we dont know. however lucky the lipercon seams guilty

during the middle ages bibles and most christian literature was written in latin i think that’s the answer you are looking for