The 18th Century Modpack

1. download the modpack 

2. download this musket mod https://www.curseforge.com/minecraft/mc-mods/revolutionary-and-napoleon-era-warfare-expansive

 and https://www.curseforge.com/minecraft/mc-mods/shadowfacts-forgelin/files/2505090

along with https://www.curseforge.com/minecraft/mc-mods/betteranimalsplus/files/2832653

3.  go to curseforge app and click on the logo of the modpack then click the three dot and then "open folder"

4.then drag the mod from the second and third link into the mods folder

5. drag the mod from the first link into the "Expansive Weaponry" folder than you can start the fun :)

6.Or download the additional files below

 if you want the game to run faster press F8 and turn off better foliage.