How to convert and merge Markdown?

Question

Markdown

1) Please tell me how easy it is to merge several Markdown files with formatting preserved?
2) How to convert a large file (formatting, illustrations, source code and about 100 pages) Markdown to a Microsoft World file, keeping the required formatting
How can this be done easier? (I have Windows 10 and OS X Yosemite)
Are there services that understand Markdown files for translating from English to Russian?
P/s Is there a way to combine multiple Markdown files from one Github repository into one Microsoft World or Markdown file?
My Markdown is written using recommendations from Github (and Yandex)

Answer 1

1) A way to merge text files .
2) MD conversion options >>> Word