Grammar, Usage / What are the differences between Simple past and Past Tense ? [6]

Past emphatic tenses in English retain present tense main verb. Avoid "did went" and such...

"The man did go" is an example to remember, illustrating that the main verb form remains the present. The man "did went" is wrong. The past tense of the verb "to do" is what creates the past emphatic in English.

Writing Feedback / Does Nation require to teach same curriculum throughout the country? [3]

DoesShouldNationa nation require to teachteachingthe same curriculum throughout the country?
"Does" denotes whether in fact something is CURRENTLY in practice; so, instead of "does" you need "should" to denote a PROSPECTIVE possibility which you open to questioning.

Next, "Nation" (capitalized, and without "a" or "the" preceding it) is only appropriate as a PROPER NOUN denoting a specific "one and only"--not your meaning here, where you are posing an abstract question. You need "a nation" or "the nation" for your purposes here.

Next, you need "teaching" instead of "to teach" here. Or you could say "schools to teach." English uses the infinitive ("to xxx") instead of the gerund (the present participle form of the verb, ending with "ing") as a noun by itself rather infrequently.

Finally, you need "the" before "same" for reasons I can't quickly explain here.