  Since Coronal Mass Ejections (CMEs) are the major drivers of space weather,
it is crucial to study their evolution starting from the inner corona. In this
work we use Graduated Cylindrical Shell (GCS) model to study the 3D evolution
of 59 CMEs in the inner ($<$ 3R$_{\odot}$) and outer ($>$ 3R$_{\odot}$) corona
using observations from COR-1 and COR-2 on-board Solar TErrestrial RElations
Observatory (STEREO) spacecraft. We identify the source regions of these CMEs
and classify them as CMEs associated with Active Regions (ARs), Active
Prominences (APs), and Prominence Eruptions (PEs). We find 27 $\%$ of CMEs show
true expansion and 31 $\%$ show true deflections as they propagate outwards.
Using 3D kinematic profiles of CMEs, we connect the evolution of true
acceleration with the evolution of true width in the inner and outer corona.
Thereby providing the observational evidence for the influence of the Lorentz
force on the kinematics to lie in the height range of $2.5-3$ R$_{\odot}$. We
find a broad range in the distribution of peak 3D speeds and accelerations
ranging from 396 to 2465 km~s$^{-1}$ and 176 to 10922 m~s$^{-2}$ respectively
with a long tail towards high values coming mainly from CMEs originating from
ARs or APs. Further, we find the magnitude of true acceleration is be inversely
correlated to its duration with a power law index of -1.19. We believe that
these results will provide important inputs for the planning of upcoming space
missions which will observe the inner corona and the models that study CME
initiation and propagation.
