[求助]请各位牛牛和非牛牛看看是啥意思

1 An expansion of the canal was planned in
1849. Increased traffic would undoubtedly have warranted its construction had
it not been for the development of the railroads.

#had
it not been for the development of the railroads#中的it 是指啥哦？？到底是运河有没有助于铁路的发展哦？？

2 Goosed by the color of money, companies
from global empire to mom-and-pop are embracing environmentally friendlier
architecture, supplies and attitudes.

楼主最好把上下文给出来

没有上下文的理解会很容易出现偏差。