Clark, Ma or umkc which is best

I'm planning to go US for this spring 2022.I haven't taken any test so far. IELTS slots are filled till November. Looking for GRE waiver universities. I'm planning to take Duolingo test in next 5 days.

with only duolingo score will I make it to US for this spring 2022. If I start applying for colleges from Sept 15 onward

Winter 23 germany ,masters students WhatsApp group ,if you want to join comment on it i will dm the link ,

#Germany #GERMANY #Munich #studyabroad #studyingermany

University of Michigan( MS in Data Science ) or IIT Chicago (MS in CS) which one is the best ?

which one is better for academic , job opportunities ?

Do Professional LOR’s require any stamp from the company?

Do we need to get the lor sealed / stamped or is it not required and can we submit a pdf?