Question: What is the main focus of both paragraphs?

Context paragraphs:
Amarna letter EA 9: Amarna letter EA 9, is a tall, compact 38 line (capable of 55 lines) clay tablet letter of 3 paragraphs, in pristine condition, with few flaws on the clay.  The photo of the reverse (pictured) shows half of Paragraph III, and some of the signs (out of focus).

Stockholm Federation of Student Unions: The Stockholm Federation of Student Unions ("Stockholms studentkårers centralorganisation," SSCO) is an organisation for cooperation between students' unions in the Stockholm region.  Through its 52 affiliated student unions SSCO represents around 80 000 students.  Founded in 1896, the organisation’s original focus was providing services to the students in Stockholm.  Since then SSCO has moved towards working as a lobby organisation and today the main focus of SSCO is influencing politicians on the local, regional and national levels.  The organisation's presiding officers represent the students towards the City of Stockholm, the Stockholm County Council, the Stockholm County Administrative Board, and within the Assembly for Presidents and Vice-Chancellors of the universities and university colleges in Stockholm.

Synergy Group OJSC: Synergy Group OJSC is an investment company in Azerbaijan with a main focus on development of non-oil sector.  It was established in 2010, with their main focus being on large-scale investments in the following areas: construction and construction materials, hospitality management, ICT, industry and agriculture.

LadyAID: LadyAID was first announced in December 2012 by the music group Lady Antebellum.  LadyAID was made to help children in need all around the world since they are unable to help themselves.  The main focus in the United States and Canada is the improvement to children hospitals and the addition of more, and while the main focus for everywhere is the improvement of child lives, such as basic needs and education.

Grey nurse shark conservation: Sharks are found throughout the world but their populations are declining every day.  This has led to protection of some species.  One of the first shark species to be protected was the Grey nurse shark "(Carcharias taurus)".  The biology, distribution and conservation of this species are dealt with in the following paragraphs with a main focus on Australia as it was here it first became protected.

World Human Powered Vehicle Association: The World Human Powered Vehicle Association is dedicated to promoting the design and development of human-powered vehicles. Its main focus is coordinating between national HPV clubs with regard to competitions and records.  The WHPVA also supports the Human Power eJournal, with a broader focus including stationary uses of human power.

East Springfield Union School: East Springfield Union School, also known as Springfield Central School, is a historic school building located at East Springfield in Otsego County, New York.  It was built in two stages, starting in 1909.  The original front section is a two story, "T" plan, cross gabled Neoclassical style building executed in rusticated concrete block and set on a half raised basement.  The rear portion is a single story utilitarian concrete block structure built in 1936.  The main facade includes a protruding, full height central gable, its pediment featuring an Adamesque lunette window, fishscale slates, and a heavy wood cornice.  The school closed in 1989.

Boston Rock: Boston Rock was a tabloid format entertainment magazine published in Boston, Massachusetts.  Its focus, as stated on the cover was: fashion, style, and entertainment.  The main focus was on the local music scene and indie rock.

Concrete masonry unit: A concrete masonry unit (CMU) is a standard size rectangular block used in building construction.

Background music: Background music refers to various styles of music or soundscapes primarily intended to be passively listened to.  It is not meant to be the main focus of an audience, but rather to supplement that which is meant to be focused upon.  Music that is played at a low volume and is not the main focus of an audience is also referred to as background music.  Traditional examples of background music include music played at various social gatherings and music played in certain retail venues.  It is also common to employ background music in various electronic media including film, television, video games, and Internet videos such as video blogs.

Supporting paragraphs: East Springfield Union School Concrete masonry unit
Answer: building construction.