Because, there were a lot more things.
( Because ( , ( there ( ( were ( ( ( a lot ) more ) things ) ) . ) ) ) )
(ROOT (S (PP (IN Because)) (, ,) (NP (EX there)) (VP (VBD were) (NP (ADJP (NP (DT a) (RB lot)) (JJR more)) (NNS things))) (. .)))
The things were stacked on top of one another.
( ( The things ) ( ( were ( stacked ( on ( top ( of ( one another ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNS things)) (VP (VBD were) (VP (VBN stacked) (PP (IN on) (NP (NP (NN top)) (PP (IN of) (NP (CD one) (DT another))))))) (. .)))