The Bible and The Book of Mormon are historical, scriptural testaments of Jesus Christ.
As Scripture they both testify that
"Jesus is the Christ...manifesting himself unto all nations..."
(Book of Mormon title page.)

The Bible deals mainly with events that took place in the 
Eastern Hemisphere about 4000 BC to 96 AD.
The Book of Mormon deals mainly with events that took place in the Western Hemisphere about 2500 BC to 421 AD.  

2 Nephi 29:1-14  559-545 BC
----------------------
The resurrected Savior visited and taught the ancient people who lived in the Americas. 34 AD
This event is recorded in the Book of Mormon starting at 3 Nephi 8 .

© By Intellectual Reserve, Inc. Jesus Christ Visits the Americas, by John Scott.  

  © By Intellectual Reserve, Inc.
<< Jesus Christ showing "the prints of the nails" his hands to a group of Nephites in the land Bountiful after his resurrection.  (3 Nephi 11:14)  34 AD 
  A portion of one of the events when the Savior came to the Americas can be found in 3 Nephi 17:5-10  34 AD   
----------------------
 Even though these ancient Book of Mormon people were blessed with a personal visit from Jesus Christ to them they, Both the light skinned Nephites and the dark-skinned Lamanites,  fell away from a correct understanding of the pure gospel and teachings of the Jesus Christ within 400 years.
----------
“They were once a delightsome people, and they had Christ for their shepherd; yea, they were led even by God the Father.”  (Mormon 5:17)  380-384 AD
“O ye fair ones, how could ye have departed from the ways of the Lord! O ye fair ones, how could ye have rejected that Jesus, who stood with open arms to receive you!”  (Mormon 6:17)  380-384 AD
----------
 <<  Spanish conquistadors and their native Tlaxcalan allies entering the Aztec capital city of Tenochtitlan.
<< In the early 1500’s, the Spanish conquistadors, explorers and representatives of the Catholic Church came into the Aztec, Maya, and Inca civilizations of the New World. They indeed discovered a ‘fallen people’.  The Spanish conquistadores were suprised to find many houses filled with books.
   

 The Aztec, Maya, and Inca people were expecting the return of a God who their ancestors once believed in.   That God was Jesus Christ.

----------
If they were once a "delightsome people and had Christ for their shepherd" ,  (Mormon 5:17),  then I would think there should be some evidence that such was the case.

----------------------    
We in our day, understand that the symbol or icon of a cross represents a belief in Jesus Christ and his death upon the cross.

 << A statue of Quetzalcoatl with holes in the palms of his hands.
 Information about the resurrected Jesus Christ's visit to the Western Hemisphere still remained among the native people in 1492 AD 
The Aztecs called this God who visited their ancestors  Quetzalcoatl. 
Quetzalcoatl, or the resurrected Jesus Christ, came down out of the sky with the same holes in the palms of his hands that he had received when nailed upon the cross at Calvary.  The resurrected Jesus Christ showed the prints of the nails in his hands to his Apostles and others in the Eastern Hemisphere. (John 20:19-27 & Matthew 27:53)
The Savior also showed his hands to a group of Nephites in the Western Hemisphere.  
"Arise and come forth...that ye may feel the prints of the nails in my hands..." (3 Nephi 11:14)

<< Hieroglyph, from the ancient city of Yaxchilán, Mexico.  Dated 350-850 AD 
In the pre-Columbus Western Hemisphere, the coming of the resurrected Jesus Christ to the Nephites was paramount.  There are many pre-Columbus icon artifacts that have been found in Mesoamerica representing the resurrected Savior's hands carved in stone.    The different statutes, icons, symbols and hieroglyphs convey a knowledge of the Savior's hands with the prints of the nails in Jesus Christ's hands.    
These carvings give incredible archaeological evidence and testify to the world that the resurrected Jesus Christ did come to the Western Hemisphere in 34 A.D. as recorded in the Book of Mormon.  
See:  The prints of the nails in Jesus Christ's hands.
 ----------------------
 << President Ezra Taft Benson, a latter-day Prophet of God, in the Church of Jesus Christ of Latter-day Saints.
“We invite all men everywhere to read the Book of Mormon, another testament of Jesus Christ.  The Bible sits on the pulpit of hundreds of different religious sects.  The Book of Mormon... verifies and clarifies the Bible.   It removes stumbling blocks; it restores many plain and precious things. We testify that when used together, the Bible and The Book of Mormon confound false doctrines, lay down contentions, and establish peace.  See: 2 Nephi 3:12  
We do not have to prove [that] the Book of Mormon is true.  The book is its own proof.  All we need to do is read it...! 
The Book of Mormon is a "second witness for Christ".  (President Ezra Taft Benson, Oct. 1984 Gen. Conference)

    A New Witness for Christ, (Video 18:12 min.)  (President Ezra Taft Benson, Oct. 1984, General Conference.)

  
-------------------------- 

  << A statement by Elder Neal A Maxwell of the Quorum of the Twelve Apostles of the Church of Jesus Christ of Latter-day Saints.  
"Eventually there will be a convergence of discoveries to make plain...what the prophets have been saying all along." 

---------------------------------------------------------------
Archaeology is, in fact, physical evidence that supports the truthfulness of historical events.  

         -----------------------------------------------------------------------------------------------
No level of evidence is going to be sufficient for someone who does not exercise faith and who does not want to believe.
No amount of evidence will ever be enough to convince anyone that the Book or Mormon or the Bible is true, without direct revelation to that individual  “by the power of the Holy Ghost”, as the following scriptures thus indicate.  (Moroni 10:3-5)   (James 1:5-6) & (Matthew 7:7-11)
---------
The prophet Nephi foretold that many would harden their hearts against additional Book of Mormon scripture.  In his closing statements before his death, he recorded the following:
“…behold, there are many that harden their hearts against the Holy Spirit, that it hath no place in them; wherefore, they cast many things away which are written and esteem them as things of naught.”   (2 Nephi 33:2)  559 BC to 545 BC
-----------
God has given us our freedom to entertain beliefs contrary to facts if we choose to do so.
Facts are stubborn little things.  What we do with them is our choice. (Phil Michel)
-----------
There are hundreds of different religions in the world and thousands of different books, written about these religions.
But there are two books that are different than all of the rest.
Those two books are the Bible and the Book of Mormon.
They are different in at least three ways.
  1.  They both claim to be a true history covering thousands of years of history.
  2.  They both claim to be written by Prophets of God and others with first-hand knowledge of historical and scriptural events.
  3.  They both claim to be Testaments of Jesus Christ, recording the actual words and deeds of the Savior. 

No other Books on earth make those claims.

 If the New Testament was missing out of the Bible, leaving only the Old Testament, that Bible would be missing a lot.
So also, the Bible without the Book of Mormon is missing a lot.
----------- 

"We invite all men everywhere to read the Book of Mormon, to ponder in their hearts the message it contains, and then to ask God, the Eternal Father, in the name of Christ if the book is true. Those who pursue this course and ask in faith will gain a testimony of its truth and divinity by the power of the Holy Ghost. 
Those who gain this divine witness from the Holy Spirit will also come to know by the same power that Jesus Christ is the Savior of the world, that Joseph Smith is His revelator and prophet in these last days, and that The Church of Jesus Christ of Latter-day Saints is the Lord’s kingdom once again established on the earth, preparatory to the Second Coming of the Messiah."  (Introduction to the Book of Mormon)

 -------------------------------------------------------------------------------------------------- 

Heavenly Father and Jesus Christ's, gift to the world:

A Proclamation to the World
The Restoration of the Fulness of the Gospel of Jesus Christ

...

...