Dept. of State DOS solicitations generally limit the number of applications that may go forward in response to a specific solicitation. 
Prospective applicants from the UI who wish to apply to a DOS program that limits the number of applications allowed per institution must refer to the UI Limited Submissions guidelines at   https://uiowa.infoready4.com/#competitionDetail/1809264

Dept of State Public Diplomacy with:

Nigeria -  U.S. Consulate Lagos Public Affairs Section (PAS) 
AFLAG-22-03
Grants.gov  https://www.grants.gov/web/grants/view-opportunity.html?oppId=337693
UIowa Internal Deadline Feb. 2, 2022.
Closing date for applications March 1, 2022

U.S. Mission to Sudan Annual Program Statement
1FY22
Grants.gov  https://www.grants.gov/web/grants/view-opportunity.html?oppId=337723
UIowa Internal Deadline August 31, 2022.
Closing date for applications  Sept. 30, 2022 

U.S. Mission to Tanzania Public Diplomacy Small Grants
AF-DAR-PAS-22-01
Grants.gov  https://www.grants.gov/web/grants/view-opportunity.html?oppId=337737
UIowa Internal Deadline May 31, 2022.
Closing date for applications  June 30, 2022 

U.S. Mission to Zimbabwe Annual Program Statement
AF-HAR-FY22-02
Grants.gov  https://www.grants.gov/web/grants/view-opportunity.html?oppId=337767
UIowa Internal Deadline April 1, 2022.
Closing date for applications  May 1, 2022 

Public Diplomacy Section Belgrade, Serbia -  BOLD Academic Fellowships - to develop the leadership capacity of young Serbians
SRB10022FO007
Grants.gov   https://www.grants.gov/web/grants/view-opportunity.html?oppId=337727
UIowa Internal Deadline March 16, 2022
Closing date  April 15, 2022