Can "hamper" be used in the format "hamper somebody to [verb]," as in the following?
The stock market crash hampered the company to expand into the German market.
I'd appreciate your help.
No. hamper doesn't take an infinitival complement like that.
The crash hampered the company's expansion into the German market.
Many speakers would also say
The crash hampered the company from expanding into the German market.
but that strikes my ear as marginal, as it treats hamper as an analog of prevent.