What version of python is required to install electrum-ltc and electrum-dash in amazon linux instance?
Your likely missing the libusb dependency.  Electrum doesn't spell it out in their repo, but I always build it with trezorlib and it explicitly requests it.  Here's what I got to work.

sudo apt install python3-dev python3-pip cython3 libusb-1.0-0-dev libudev-dev python3-pyqt5
sudo -H python3 -m pip install --upgrade setuptools pip
sudo -H python3 -m pip install https://some-path-to-tarball