Once the United States again feels the courage to sacrifice blood and treasure on endeavours of exploration and knowledge, if we have not already begun to see such a reawakening already [...]
(Orbiter Forum
The author claims to be from the USA, Illinois)
I suppose I should read the part in bold as follows:
"... on endeavours to explore and gain knowledge..." or "...on endeavours to gain knowledge and explore".
Am I right?
Thanks.