The last sentence is wrong, it has bad grammar
he gave his winged sandals
Let's reconstruct this sentence.
"Everyone I know complain" doesn't make much sense.
Popping an "s" on the end of "complain" might do the trick, lets try!
"Everyone I know complains" ah, there we go. Much smoother.
Next section!
"Complains because these days backpacks weigh a ton."
Though this may sound correct, it is still quite a bunch. Let's fix that.
Rearranging your words might work.
Maybe in the section that says "Complains because these days" we can change that to "Complains these days because" Much smoother, and easier to read.
We have so far is: "Everyone I know complains these days because"
Yay, let's continue.
The remaining of the sentence is fine so we can put it on the end of our freshly constructed sentence.
Our final sentence should be:
"Everyone I know complains these days because backpacks weigh a ton."
The concluding essay should always include your thesis
Answer: Relations between the Soviet Union and the United States were driven by a complex interplay of ideological, political, and economic factors, which led to shifts between cautious cooperation and often bitter superpower rivalry over the years. The distinct differences in the political systems of the two countries often prevented them from reaching a mutual understanding on key policy issues and even, as in the case of the Cuban missile crisis, brought them to the brink of war.
Explanation: