全句還原的方法，how?

[nemolee]

(摘自於 PP1 某篇文章.. )

The Lone Wolf decision ended this era of formal negotiation and finally did away with what had increasingly become the empty formality of obtaining tribal consent.

有沒有善心人士來幫忙分析這句話的結構.... 從 away with what had increasingly become..... what 又是指什麼? (what = the things that 嗎)

全句應該怎麼還原?

了解 did 指前面的 ended.... 這是倒裝嗎? (由輕到重?)

請好心的高手或是善心人士幫忙，感恩。

[dibert8]

The Lone Wolf decision ended this era of formal negotiation and finally did {away} with what had increasingly become the empty formality of obtaining tribal consent.
主詞 = decision
動詞 = ended and did (= ended)
ended with... "隨著...結束"