It helped them get to places a lot faster
One item can be the weapons. Many Europeans gave the natives a bunch of weapons because they had plenty. They even gave them faulty weapons or broken ones because the natives didn't know any better.
The correct answer is - trade.
The Sumerians engaged in trade with their move of exchanging their surplus food for materials like the copper that they needed to develop their weapons and thus their army forces. This was a very smart move from their side because they managed to use the resource they had in abundance but was scarce in the other surrounding areas so that they take what they need to become stronger and pretty much defend more efficiently from the same people they were engaging in trade with.
Answer:
The older male astronaut welcomes the female trainees.
Explanation
As written "The older male astronaut welcome the female trainees" the word welcome is being used as a verb and is impropley conjugated.
I - welcome
You- welcome
He/She/It- welcomes
We- welcome
They- welcome
