~と(が)相まって => combining / together with… N1
Attached
始める => to start; to begin to ~ N4
に相違ない => without a doubt; certain; sure N2
あらためる => to revise; to replace N3
Happens next
をはじめ/をはじめとする => For example, A N2
Lists, Examples
に[相違「そうい」]ない => No doubt N2
Information, Report
と[相「あい」]まって => Along with A N1
Lists, examples
ひとつには…ためである => Partly because of ... N3
Cause, reason
[始「はじ」]める => To begin to A; A begins N4
Secondary Verb
~ためしに…てみる => to attempt, to test, to try out N1
Invite and advise
~んがため(に)/~んがための      => in order to ~ N1
~づめだ      => full of N1