How will you define the Church based from your spiritual insight?

This is my definition of a church from my spiritual insight...

Explanation:

The church is not a building; it is a group of people. It is not a denomination; it is everyone who has received the Holy Spirit. And it doesn't grant salvation; it is people, loving and glorifying God and teaching others about a saving knowledge of Christ. As believers, we are joined with all Christians from Peter to the smallest child in the body of Christ. The local church is where the members of the universal church can apply 1 Corinthians 12: encouraging, teaching, and building one another up in the knowledge and grace of the Lord Jesus Christ.

which statement explains one of the reasons world war 1 was so much more destructive than earlier conflicts

what are the options?